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81309998 — PIN,COTTER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

81309998: PIN,COTTER.

The PIN,COTTER is a the manufacturer industrial component. Key specifications include diameter: 0.1875 INCHES NOMINAL IN, underloop_length: 3.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-693-4045, 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
81309998
NSN: 5315-01-693-4045
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 7PZX0 — FAIRBANKS MORSE, LLC (USA)
SPECIFICATIONS
diameter0.1875 INCHES NOMINAL IN
underloop_length3.000 INCHES NOMINAL IN
NSN5315-01-693-4045
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 81309998 · 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
•
DIAMETER: 0.1875 INCHES NOMINAL IN
•
UNDERLOOP LENGTH: 3.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
DIAMETER0.1875 INCHES NOMINAL IN
UNDERLOOP LENGTH3.000 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5315 — Nails, Machine Keys, and Pins
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5315-00-000-1037 5315-00-000-1067 5315-00-000-1245 5315-00-000-1372 5315-00-000-1412 5315-00-001-1571 5315-00-001-1572 5315-00-001-1602
SUBSTITUTES & CROSS-REFERENCES 1
S9312-AH-MMA-020-FIG-7-27-7Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 81309998?
81309998 is a PIN,COTTER.
What parts can replace 81309998?
There is 1 known substitute for 81309998: S9312-AH-MMA-020-FIG-7-27-7. Substitute compatibility should be verified for your specific system.
What is the NSN for 81309998?
81309998 is cataloged in the U.S. Government catalog under NSN 5315-01-693-4045. 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.