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1521640 — PIN,STRAIGHT,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

1521640: PIN,STRAIGHT,HEADLESS.

The PIN,STRAIGHT,HEADLESS is a the manufacturer industrial component. Key specifications include special_features: 8 X 10 IN.; SAFELIGHT FILTER; 6B/BROWN IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-200-9154, 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
1521640
NSN: 5315-00-200-9154
NIINs: 002009154, 014126604
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 70040 — GENERAL MOTORS LLC DBA GENERAL MOTORS (USA)
SPECIFICATIONS
special_features8 X 10 IN.; SAFELIGHT FILTER; 6B/BROWN IN
NSN5315-00-200-9154
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1521640 · 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
•
FIRST END STYLE: RADIUS
•
HARDNESS RATING: 45.0 ROCKWELL C NOMINAL OVERALL
•
PIN OVERALL DIAMETER: 0.2444 INCHES MINIMUM AND 0.2450 INCHES MAXIMUM IN
•
PIN OVERALL LENGTH: 0.994 INCHES MINIMUM AND 1.016 INCHES MAXIMUM IN
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
FIRST END CORNER RADIUS: 0.117 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
FIRST END STYLERADIUS
HARDNESS RATING45.0 ROCKWELL C NOMINAL OVERALL
PIN OVERALL DIAMETER0.2444 INCHES MINIMUM AND 0.2450 INCHES MAXIMUM IN
PIN OVERALL LENGTH0.994 INCHES MINIMUM AND 1.016 INCHES MAXIMUM IN
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
MATERIALSTEEL CORROSION RESISTING OVERALL
FIRST END CORNER RADIUS0.117 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 2
7698605Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
1521578Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1521640?
1521640 is a PIN,STRAIGHT,HEADLESS.
What parts can replace 1521640?
There are 2 known substitutes for 1521640: 7698605, 1521578. Substitute compatibility should be verified for your specific system.
What is the NSN for 1521640?
1521640 is cataloged in the U.S. Government catalog under NSN 5315-00-200-9154. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.