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255945 ✓ Verified by PartsTable
Equip · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The PIN,SHOULDER,HEADED is a Equip industrial component. Key specifications include overall_length: 4.020 INCHES NOMINAL IN, cross-sectional_thickness: 0.061 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN, cross-sectional_shape_style: SOLID SINGLE OR COMPOSITION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-568-1175, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
255945
NSN: 5315-00-568-1175
FSC: 5315
CAGE: 56055 — PRECISION SPEED MANUFACTURING, LLC (USA)
SPECIFICATIONS
overall_length4.020 INCHES NOMINAL IN
cross-sectional_thickness0.061 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
NSN5315-00-568-1175
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 255945 · Equip ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FIRST END TAPER LENGTH: 0.020 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
•
HEAD STYLE: FLAT
•
UNDER HEAD LENGTH: 0.870 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN
•
MATERIAL: IRON ALLOY 660 OVERALL
•
STYLE DESIGNATOR: SHOULDER
•
FIRST STEP DIAMETER: 0.374 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
•
PIN HEAD DIAMETER: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
•
FIRST STEP LENGTH: 0.380 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
FIRST END TAPER LENGTH0.020 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
HEAD STYLEFLAT
UNDER HEAD LENGTH0.870 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN
MATERIALIRON ALLOY 660 OVERALL
STYLE DESIGNATORSHOULDER
FIRST STEP DIAMETER0.374 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
PIN HEAD DIAMETER0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
FIRST STEP LENGTH0.380 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN
FIRST END TAPER ANGLE45.0 DEGREES NOMINAL
SECOND STEP LENGTH0.420 INCHES MINIMUM AND 0.460 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
45002Interchangeable
interchangeable cross-reference
interchangeable
255945Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 255945?
255945 is a PIN,SHOULDER,HEADED manufactured by Equip.
What parts can replace 255945?
There are 2 known substitutes for 255945: 45002, 255945. Substitute compatibility should be verified for your specific system.
What is the NSN for 255945?
255945 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-568-1175. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026