Shop by Brand

New Holland Agriculture
New Holland Construction
All brands

Help & Support

Shipping & Delivery
Payment Methods
Return Policy
Order Information
Contact

Visit Us

31 Meadow StClinton, NY 13323

Closed · opens today 7:30 AM

Follow Us

Clinton Tractor & Implement Co.Since 1953All rights reserved © 2026

Privacy Policy Terms of Service

Skip to content

Parts Store Parts Diagrams

Search by manufacturer, assembly, or parts⌘K

/

/

·

⌘K

Flange Nut Hex, M5 x 0.8, Cl 8 — fits 81 models across the New... | CROP

Parts
New Holland
Fasteners
Flange Nut Hex, M5 x 0.8, Cl 8 — fits 81 models across the New Holland lineup — 12578017

Flange Nut Hex, M5 x 0.8, Cl 8 — fits 81 models across the New Holland lineup — 12578017

Part #12578017

Fits: New Holland POWERSTAR-110, New Holland T5.110, New Holland POWERSTAR-100, New Holland T4.80LP, New Holland T4.80LP + 262 more

$2.22

In Stock

About this part

Fits 81 variants across 18 series:

T4.xxx Tractors11 variants
Workmaster10 variants
T4.xxf8 variants
T5.xxx7 variants
Powerstar6 variants
Tnda5 variants
T4.xxlp4 variants
T40004 variants
T4000f4 variants

About this part

Brand

New Holland

Part Number

12578017

SKU

CT-NHL-12578017

Category

Fasteners

Minimum order

10 (sold as pack)

Warning

For California Residents Only: Cancer and Reproductive Harm www.p65warnings.ca.gov

About this part

Flange Nut Hex, M5 x 0.8, Cl 8
fits 81 models across the New Holland lineup
12578017

$2.22

$2.22/each · pack of 10 = $22.20

Quantity (sold in pack of 10)

In Stock

Ships from Clinton Tractor

Clinton Tractor Parts

Order as a full pack

Pack of 10 — $22.20

$2.22/ea · SKU CT-NHL-12578017-PK10

We're out of individual units. The full pack ships from CNH.

Returns within 30 days

Restocking fees and return shipping terms depend on the item source. See return policy.

$2.22

In Stock

Pack of 10

$22.20

T6.140 - 180 Autocommand Tractors4 variants

Tnsa4 variants

T3.xxf3 variants

Tk4.xxx3 variants

Tnfa3 variants

T6.120 - 180 Dual/electro Command Tractors2 variants

T5. Auto Command Stage V1 variant

T5. Dynamic Command Stage V1 variant

T6.xxx Dynamic Command Tractors1 variant

Show all 81 models

T4.xxx Tractors (11)

New Holland T4.100
New Holland T4.105
New Holland T4.110
New Holland T4.115
New Holland T4.120
New Holland T4.55
New Holland T4.65
New Holland T4.75
New Holland T4.85
New Holland T4.90
New Holland T4.95

Workmaster (10)

New Holland WORKMASTER-100-PLUS
New Holland WORKMASTER-105
New Holland WORKMASTER-110-PLUS
New Holland WORKMASTER-120
New Holland WORKMASTER-120-PLUS
New Holland WORKMASTER-55
New Holland WORKMASTER-65
New Holland WORKMASTER-75
New Holland WORKMASTER-90-PLUS
New Holland WORKMASTER-95

T4.xxf (8)

New Holland T4.100F
New Holland T4.105F
New Holland T4.110F
New Holland T4.75F
New Holland T4.80F
New Holland T4.85F
New Holland T4.90F
New Holland T4.95F

T5.xxx (7)

New Holland T5.100
New Holland T5.105
New Holland T5.110
New Holland T5.115
New Holland T5.120
New Holland T5.90
New Holland T5.95

Powerstar (6)

New Holland POWERSTAR-100
New Holland POWERSTAR-110
New Holland POWERSTAR-120
New Holland POWERSTAR-65
New Holland POWERSTAR-75
New Holland POWERSTAR-90

Tnda (5)

New Holland TN60DA
New Holland TN70DA
New Holland TN75DA
New Holland TN85DA
New Holland TN95DA

T4.xxlp (4)

New Holland T4.100LP
New Holland T4.110LP
New Holland T4.80LP
New Holland T4.90LP

T4000 (4)

New Holland T4020
New Holland T4030
New Holland T4040
New Holland T4050

T4000f (4)

New Holland T4030F
New Holland T4040F
New Holland T4050F
New Holland T4060F

T6.140 - 180 Autocommand Tractors (4)

New Holland T6.145
New Holland T6.155
New Holland T6.165
New Holland T6.175

Tnsa (4)

New Holland TN60SA
New Holland TN70SA
New Holland TN75SA
New Holland TN85SA

T3.xxf (3)

New Holland T3.60F
New Holland T3.70F
New Holland T3.80F

Tk4.xxx (3)

New Holland TK4.80F
New Holland TK4.80N
New Holland TK4.80V

Tnfa (3)

New Holland TN75FA
New Holland TN85FA
New Holland TN95FA

T6.120 - 180 Dual/electro Command Tractors (2)

New Holland T6.125
New Holland T6.160

T5. Auto Command Stage V (1)

New Holland T5.130

T5. Dynamic Command Stage V (1)

New Holland T5.140

T6.xxx Dynamic Command Tractors (1)

New Holland T6.180

Replaces5183777

Most Popular New Holland Parts

Top 6 of 186 best sellers

Oil, Hydraulic — New Holland — 73341774

PN: 73341774

Ask for a price

Wet Battery 12V,'' 300 Cca'','' 5-13/16'' W x 7-5/16'' H x 7-3/4'' L'' — fits 43 New Holland models — F350DSW

Wet Battery 12V,'' 300 Cca'','' 5-13/16'' W x 7-5/16'' H x 7-3/4'' L'' — fits 43 New Holland models — F350DSW

PN: F350DSW

Hydraulic Oil — New Holland — 73344274

PN: 73344274

Hydraulic Oil — New Holland — 73344268

PN: 73344268

Attachment Long Tine for New Holland E57C / E60C — 48058021

PN: 48058021

Wet Battery 12V,'' 1200 Cca'','' 8-1/8'' W x 8-1/8'' H x 20'' L'' — fits 121 models across the CNH lineup — F150DSW

Wet Battery 12V,'' 1200 Cca'','' 8-1/8'' W x 8-1/8'' H x 20'' L'' — fits 121 models across the CNH lineup — F150DSW

PN: F150DSW

This Part Fits

Parts Diagrams

Often Bought Together

Service Manuals

Manual Pages

Related Shorts

Related Videos

This Part Fits

Tractors

193

New Holland T4.105F10 schematics
New Holland T4.75F10 schematics
New Holland T4.85F10 schematics
New Holland T4.95F10 schematics
New Holland T4030F10 schematics
New Holland T4030F10 schematics
New Holland T4040F10 schematics
New Holland T4040F10 schematics
New Holland T4050F10 schematics
New Holland T4050F10 schematics
New Holland T4060F10 schematics
New Holland TN60DA8 schematics
New Holland TN60SA8 schematics
New Holland TN70DA8 schematics
New Holland TN70SA8 schematics
New Holland TN75DA8 schematics
New Holland TN75SA8 schematics
New Holland T5.1106 schematics

Previous
Page 1of11
1
2
3
4
11
Next

Part Number History

Replaces

Current

12578017 this part

Related Shorts

15

From Above: New Holland The T6.180 Carves a Hayfield Clean #shorts

From Above: New Holland The T6.180 Carves a Hayfield Clean #shortsClinton Tractor & Implement Co.

Watch the New Holland B115D Switch Between Two Jobs Without Stopping #shorts

Watch the New Holland B115D Switch Between Two Jobs Without Stopping #shortsClinton Tractor & Implement Co.

Watch the New Holland T6.180 Tear Through Waist-High Grass #shorts

Watch the New Holland T6.180 Tear Through Waist-High Grass #shortsClinton Tractor & Implement Co.

Watch the FR550 Reload a Wagon Without Stopping #shorts

Watch the FR550 Reload a Wagon Without Stopping #shortsClinton Tractor & Implement Co.

Watch the New Holland B115D Cut a Trench Straight Through the Dirt #shorts

Watch the New Holland B115D Cut a Trench Straight Through the Dirt #shortsClinton Tractor & Implement Co.

She’s not my only one…

She’s not my only one…Clinton Tractor & Implement Co.

This New Holland Articulated Loader Timelapse Hits Hard | Spring Is Almost Here"

This New Holland Articulated Loader Timelapse Hits Hard | Spring Is Almost Here"Clinton Tractor & Implement Co.

How the FR550 Gets a Perfect Chop Every Time #shorts

How the FR550 Gets a Perfect Chop Every Time #shortsClinton Tractor & Implement Co.

The New Holland W100D Scoops and Loads Like It's Nothing #shorts

The New Holland W100D Scoops and Loads Like It's Nothing #shortsClinton Tractor & Implement Co.

New Holland Lineup Walk-Around | On Our Lot #shorts

New Holland Lineup Walk-Around | On Our Lot #shortsClinton Tractor & Implement Co.

New Holland PowerStar 110 — Hay-Ready Workhorse | On Our Lot Series #shorts

New Holland PowerStar 110 — Hay-Ready Workhorse | On Our Lot Series #shortsClinton Tractor & Implement Co.

New Holland T7 Triple Mower Setup Timelapse is NO Joke | Spring Is HERE #shorts

New Holland T7 Triple Mower Setup Timelapse is NO Joke | Spring Is HERE #shortsClinton Tractor & Implement Co.

Watch This Boomer 40 Sweep a Roadside Clean in Seconds #shorts

Watch This Boomer 40 Sweep a Roadside Clean in Seconds #shortsClinton Tractor & Implement Co.

New Holland Workmaster 75 — Hay-Day Hero | On Our Lot Series #shorts

New Holland Workmaster 75 — Hay-Day Hero | On Our Lot Series #shortsClinton Tractor & Implement Co.

Massive Harvester in Action #shorts

Massive Harvester in Action #shortsClinton Tractor & Implement Co.

Related Videos

5

Baling Light Windrows: T7.175 + Roll-Belt 451 Tackle Second Cut Hay

Baling Light Windrows: T7.175 + Roll-Belt 451 Tackle Second Cut HayClinton Tractor & Implement Co. · 17:21

New Holland T9 & Harvester Working Hard — Harvest Season in Central New York | Clinton Tractor

New Holland T9 & Harvester Working Hard — Harvest Season in Central New York | Clinton TractorClinton Tractor & Implement Co. · 19:40

Watch This New Holland W80C Crush Through Spring Cleanup in Clinton, NY

Watch This New Holland W80C Crush Through Spring Cleanup in Clinton, NYClinton Tractor & Implement Co. · 6:03

Inside the Shop: T5s, PowerStars, and Kinze Planters Before Spring Hits

Inside the Shop: T5s, PowerStars, and Kinze Planters Before Spring HitsClinton Tractor & Implement Co. · 6:36

INSANE Equipment Drop at the 2026 Farm Show — You Have to See This

INSANE Equipment Drop at the 2026 Farm Show — You Have to See ThisClinton Tractor & Implement Co. · 11:05

Found on 124 parts diagrams

Filter parts diagrams

Dia Kit, Isobus Socket, Relay, Wire Harness

Ref 15 · 20 hotspots

AccessoriesNew Holland T5.110

Dia Kit, Isobus Socket, Relay, Wire Harness

Front Headlamps, Turn Indicator And Rear Reflector

Ref 15 · 18 hotspots

Electrical SystemsNew Holland T4030F

Front Headlamps, Turn Indicator And Rear Reflector

STD + VAR - 330798, 390798

Ref 9 · 11 hotspots

Electrical SystemsNew Holland T5.105

STD + VAR - 330798, 390798

Var - 744762, 744763, 744764 - Transmission, Electronic Control Unit

Electrical SystemsNew Holland T4.105

Var - 744762, 744763, 744764 - Transmission, Electronic Control Unit

Transmission External Shifting Controls

Ref 6 · 8 hotspots

TransmissionNew Holland T4040

Transmission External Shifting Controls

Central Reduction Gears Controls

Ref 4 · 6 hotspots

TransmissionNew Holland T4040

Central Reduction Gears Controls

Var - 743381, 743508 - Transmission, Controls, Lever, Shuttle, Splitter

Ref 8 · 13 hotspots

TransmissionNew Holland T4.100F

Var - 743381, 743508 - Transmission, Controls, Lever, Shuttle, Splitter

2WD Main Harness

Ref 9 · 24 hotspots

Operators Platform-CabNew Holland T4030F

2WD Main Harness

Work Light, Rear, Na, W/O Cab

Ref 6 · 13 hotspots

Electrical SystemsNew Holland T4.100F

Work Light, Rear, Na, W/O Cab

Var - 743509

Ref 9 · 12 hotspots

TransmissionNew Holland T4.100F

Var - 743509

VAR - 330798- ELECTRICAL SYSTEM CABLES

Ref 6 · 40 hotspots

Electrical SystemsNew Holland T5.105

VAR - 330798- ELECTRICAL SYSTEM CABLES

Var - 330273

Ref 11 · 15 hotspots

TransmissionNew Holland T4.100F

Var - 330273

28X16 FOR 16X16 MECHANICAL TRANSMISSION (CREEPER) - LEVER AND BELLOWS (VAR.330111)

Ref 6 · 8 hotspots

Front Axle & SteeringNew Holland T4040

28X16 FOR 16X16 MECHANICAL TRANSMISSION (CREEPER) - LEVER AND BELLOWS (VAR.330111)

Var - 330111, 743548 - Transmission Control, Lever Reduction Gear

Ref 2 · 9 hotspots

TransmissionNew Holland T4.100F

Var - 330111, 743548 - Transmission Control, Lever Reduction Gear

Main Harness Without Mechanical Battery Isolator

Ref 16 · 24 hotspots

Operators Platform-CabNew Holland T4030F

Main Harness Without Mechanical Battery Isolator

Gearbox Outer Controls, Clutch Levers

Ref 6 · 7 hotspots

Operators Platform-CabNew Holland TN75FA

Gearbox Outer Controls, Clutch Levers

Power Shuttle - Cover

Ref 6 · 8 hotspots

Operators Platform-CabNew Holland T4030F

Power Shuttle - Cover

VAR - 345706, 345702, 345707, 345703, 345708, 345704, 345709, 345705, 349530, ENGINE, WIRE HARNESS

Ref 9 · 32 hotspots

Electrical SystemsNew Holland WORKMASTER-105

VAR - 345706, 345702, 345707, 345703, 345708, 345704, 345709, 345705, 349530, ENGINE, WIRE HARNESS

Reverse Control

Ref 6 · 12 hotspots

Front Axle & SteeringNew Holland T4040

Reverse Control

Var - 758401, 758402, 758403 - Cold Start System, Grid Heater, Harness

Electrical SystemsNew Holland T6.145

Var - 758401, 758402, 758403 - Cold Start System, Grid Heater, Harness

(VAR.275-275/1) 32X16 (30KM/H) TRANSM. W/HI-LO & POWER SHUTTLE, W/OIL COOLER

Ref 1 · 2 hotspots

Front Axle & SteeringNew Holland TN85DA

(VAR.275-275/1) 32X16 (30KM/H) TRANSM. W/HI-LO & POWER SHUTTLE, W/OIL COOLER

Transmission External Shifting Controls

Ref 6 · 8 hotspots

Operators Platform-CabNew Holland T4030F

Transmission External Shifting Controls

(Var.275-275/1) Hi-Lo Transmission, External Shifting Controls

Ref 6 · 10 hotspots

TransmissionNew Holland TN60DA

(Var.275-275/1) Hi-Lo Transmission, External Shifting Controls

Transmission External Shifting Controls

Ref 6 · 7 hotspots

TransmissionNew Holland TN85DA

Transmission External Shifting Controls

Var - 330273 - Transmission, Control Lever, Hi-Lo

Ref 10 · 13 hotspots

TransmissionNew Holland T4.100F

Var - 330273 - Transmission, Control Lever, Hi-Lo

Work Light, Rear, Na, W/O Cab

Ref 6 · 14 hotspots

Electrical SystemsNew Holland T4.100LP

Work Light, Rear, Na, W/O Cab

Central Reduction Gears Controls

Ref 4 · 6 hotspots

TransmissionNew Holland T4020

Central Reduction Gears Controls

Var - 337323, 743560

Ref 4 · 5 hotspots

Electrical SystemsNew Holland T4.100

Var - 337323, 743560

(Var.117) Creeper Transmission For Hi-Lo 44X16 (30Km/H)

Ref 6 · 6 hotspots

Front Axle & SteeringNew Holland TN60DA

(Var.117) Creeper Transmission For Hi-Lo 44X16 (30Km/H)

Var - 330111, 743548

Ref 7 · 9 hotspots

TransmissionNew Holland T4.100F

Var - 330111, 743548

Var - 337323, 743560

Ref 4 · 5 hotspots

Electrical SystemsNew Holland T4.100

Var - 337323, 743560

Var - 743509

Ref 8 · 11 hotspots

TransmissionNew Holland T4.100F

Var - 743509

28X16 For 16X16 Mechanical Transmission (Creeper)

Ref 6 · 8 hotspots

Front Axle & SteeringNew Holland T4020

28X16 For 16X16 Mechanical Transmission (Creeper)

(Var.275) Hi-Lo Mudguards And Footboards

Ref 1 · 2 hotspots

Front Axle & SteeringNew Holland TN60DA

(Var.275) Hi-Lo Mudguards And Footboards

Var - 330273

Ref 10 · 13 hotspots

TransmissionNew Holland T4.100LP

Var - 330273

VAR - 334773, 391263 - FUSE BOX

Electrical SystemsNew Holland T5.110

VAR - 334773, 391263 - FUSE BOX

WORK LIGHT, REAR, NA, CAB

Ref 3 · 11 hotspots

Electrical SystemsNew Holland T4.100F

WORK LIGHT, REAR, NA, CAB

4WD Main Harness

Ref 22 · 22 hotspots

Operators Platform-CabNew Holland T4030F

4WD Main Harness

Mudguards And Platforms For Hydraulic Transmission

Ref 6 · 11 hotspots

Operators Platform-CabNew Holland T4030F

Mudguards And Platforms For Hydraulic Transmission

44X16 FOR 32X16 HI-LO AND POWER SHUTTLE - LEVER AND BELLOWS (VAR.331111)

Ref 6 · 8 hotspots

Front Axle & SteeringNew Holland T4040

44X16 FOR 32X16 HI-LO AND POWER SHUTTLE - LEVER AND BELLOWS (VAR.331111)

Reverser Control Lever

Ref 6 · 12 hotspots

Operators Platform-CabNew Holland T4030F

Reverser Control Lever

Power Shuttle - Cover

Ref 6 · 7 hotspots

Operators Platform-CabNew Holland T4030F

Power Shuttle - Cover

Var - 759059, Transmission, Electronic Control Unit, Hi-Lo, Cab

Electrical SystemsNew Holland T5.100

Var - 759059, Transmission, Electronic Control Unit, Hi-Lo, Cab

Dia Kit, Isobus Socket, Relay, Wire Harness

Ref 15 · 20 hotspots

AccessoriesNew Holland T5.110

Dia Kit, Isobus Socket, Relay, Wire Harness

Main Harness Without Mechanical Battery Isolator

Ref 16 · 21 hotspots

Operators Platform-CabNew Holland T4030F

Main Harness Without Mechanical Battery Isolator

(VAR.074) 32X12 (40KM/H) TRANS. W/CREEPER SPEEDS FOR HI-LO AND P.SHUTTLE

Ref 6 · 6 hotspots

Front Axle & SteeringNew Holland TN95DA

(VAR.074) 32X12 (40KM/H) TRANS. W/CREEPER SPEEDS FOR HI-LO AND P.SHUTTLE

Reverser Control

Ref 6 · 7 hotspots

Front Axle & SteeringNew Holland TN60DA

Reverser Control

VAR - 336610, 336611, 336612 - ISOBUS SOCKET, RELAY, WIRE HARNESS

Electrical SystemsNew Holland T5.110

VAR - 336610, 336611, 336612 - ISOBUS SOCKET, RELAY, WIRE HARNESS

VAR - 344762, 393002, 393003, FUSE BOX, WIRE HARNESS & CONNECTOR

Ref 9 · 21 hotspots

Electrical SystemsNew Holland WORKMASTER-55

VAR - 344762, 393002, 393003, FUSE BOX, WIRE HARNESS & CONNECTOR

Dia Kit, Cold Start System, Grid Heater, Harness

AccessoriesNew Holland T6.125

Dia Kit, Cold Start System, Grid Heater, Harness

+74 more parts diagrams

Often Bought Together

Fuse Box — fits 52 models across the New Holland lineup — 47383128 image 1

Fuse Box — fits 52 models across the New Holland lineup — 47383128

Fuse 125A, Green — fits 141 models across the New Holland lineup — 87422637 image 1

Fuse 125A, Green — fits 141 models across the New Holland lineup — 87422637

Fuse 60A, Midival — fits 124 models across the New Holland lineup — 87548130 image 1

Fuse 60A, Midival — fits 124 models across the New Holland lineup — 87548130

Fuse Holder — fits 44 New Holland models — 5198692 image 1

Fuse Holder — fits 44 New Holland models — 5198692

Fuse 20A, Mini, Yellow — fits 175 models across the New Holland lineup — 10401190 image 1

Fuse 20A, Mini, Yellow — fits 175 models across the New Holland lineup — 10401190

Fuse Holder — fits 52 models across the New Holland lineup — 5173266 image 1

Fuse Holder — fits 52 models across the New Holland lineup — 5173266

Fuse 5A, Mini, Beige — fits 145 models across the New Holland lineup — 10395890 image 1

Fuse 5A, Mini, Beige — fits 145 models across the New Holland lineup — 10395890

Fuse 25 Amp Mini — fits 148 models across the New Holland lineup — 10401290 image 1

Fuse 25 Amp Mini — fits 148 models across the New Holland lineup — 10401290

Fuse 30A — fits 104 models across the New Holland lineup — 10402190 image 1

Fuse 30A — fits 104 models across the New Holland lineup — 10402190

Fuse 50A, Maxi, Red — fits 79 models across the New Holland lineup — 5173263 image 1

Fuse 50A, Maxi, Red — fits 79 models across the New Holland lineup — 5173263