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Technical Data Sheet
PartsTable / COMPONENT / 9171978
9171978 ✓ Verified by PartsTable
— · 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,STRAIGHT,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OR STEEL COMP 302 OR STEEL COMP 303S OR STEEL COMP 303SE OR STEEL COMP 316 OVERALL, first_end_style: CHAMFERED, surface_treatment: PASSIVATE OVERALL, pin_overall_length: 1.490 INCHES MINIMUM AND 1.510 INCHES MAXIMUM IN, pin_overall_diameter: 0.2495 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN, first_end_taper_angle: 45.0 DEGREES NOMINAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-655-8110, 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
9171978
NSN: 5315-00-655-8110
FSC: 5315
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OR STEEL COMP 302 OR STEEL COMP 303S OR STEEL COMP 303SE OR STEEL COMP 316 OVERALL
first_end_styleCHAMFERED
surface_treatmentPASSIVATE OVERALL
pin_overall_length1.490 INCHES MINIMUM AND 1.510 INCHES MAXIMUM IN
pin_overall_diameter0.2495 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN
first_end_taper_angle45.0 DEGREES NOMINAL
first_end_taper_length0.031 INCHES NOMINAL IN
second_end_relationship_with_first_endIDENTICAL
surface_treatment_document_and_classificationMIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5315-00-655-8110
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 9171978 · OEM ⚠ 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
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
FIRST END TAPER ANGLE: 45.0 DEGREES NOMINAL
•
MATERIAL: STEEL CORROSION RESISTING OR STEEL COMP 302 OR STEEL COMP 303S OR STEEL COMP 303SE OR STEEL COMP 316 OVERALL
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
PIN OVERALL LENGTH: 1.490 INCHES MINIMUM AND 1.510 INCHES MAXIMUM IN
•
FIRST END STYLE: CHAMFERED
•
FIRST END TAPER LENGTH: 0.031 INCHES NOMINAL IN
•
PIN OVERALL DIAMETER: 0.2495 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTPASSIVATE OVERALL
FIRST END TAPER ANGLE45.0 DEGREES NOMINAL
MATERIALSTEEL CORROSION RESISTING OR STEEL COMP 302 OR STEEL COMP 303S OR STEEL COMP 303SE OR STEEL COMP 316 OVERALL
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
PIN OVERALL LENGTH1.490 INCHES MINIMUM AND 1.510 INCHES MAXIMUM IN
FIRST END STYLECHAMFERED
FIRST END TAPER LENGTH0.031 INCHES NOMINAL IN
PIN OVERALL DIAMETER0.2495 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
GS514W1BInterchangeable
interchangeable cross-reference
interchangeable
21230Interchangeable
interchangeable cross-reference
interchangeable
A315BInterchangeable
interchangeable cross-reference
interchangeable
00606296003154Interchangeable
interchangeable cross-reference
interchangeable
A315Interchangeable
interchangeable cross-reference
interchangeable
125-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 9171978?
9171978 is a PIN,STRAIGHT,HEADLESS.
What parts can replace 9171978?
There are 9 known substitutes for 9171978: GS514W1B, 21230, A315B and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 9171978?
9171978 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-655-8110. 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