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AN381-4-26 — PIN,COTTER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

AN381-4-26: PIN,COTTER.

The PIN,COTTER is a the manufacturer industrial component. Key specifications include diameter: 0.125 INCHES NOMINAL IN, material: STEEL CORROSION RESISTING OVERALL, point_type: EXTENDED PRONG MITRE END OR EXTENDED PRONG BEVEL OR MODIFIED HAMMER LOCK, style_designator: STANDARD, underloop_length: 1.625 INCHES NOMINAL IN, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-236-8361, 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
AN381-4-26
NSN: 5315-00-236-8361
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
diameter0.125 INCHES NOMINAL IN
materialSTEEL CORROSION RESISTING OVERALL
point_typeEXTENDED PRONG MITRE END OR EXTENDED PRONG BEVEL OR MODIFIED HAMMER LOCK
style_designatorSTANDARD
underloop_length1.625 INCHES NOMINAL IN
surface_treatmentPASSIVATE OVERALL
NSN5315-00-236-8361
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: AN381-4-26 · 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
•
STYLE DESIGNATOR: STANDARD
•
DIAMETER: 0.125 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
UNDERLOOP LENGTH: 1.625 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
POINT TYPE: EXTENDED PRONG MITRE END OR EXTENDED PRONG BEVEL OR MODIFIED HAMMER LOCK
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSTANDARD
DIAMETER0.125 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
UNDERLOOP LENGTH1.625 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING OVERALL
POINT TYPEEXTENDED PRONG MITRE END OR EXTENDED PRONG BEVEL OR MODIFIED HAMMER LOCK
SUBSTITUTES & CROSS-REFERENCES 2
8526109Reference document
Same NSN cross-reference
Reference document — Secondary reference
59D8Reference document
IBM 1.2TB 10k RPM 2.5 SAS Sff3 HDD
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AN381-4-26?
AN381-4-26 is a PIN,COTTER.
What parts can replace AN381-4-26?
There are 2 known substitutes for AN381-4-26: 8526109, 59D8. Substitute compatibility should be verified for your specific system.
What is the NSN for AN381-4-26?
AN381-4-26 is cataloged in the U.S. Government catalog under NSN 5315-00-236-8361. 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.