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AN381-8-48 — PIN,COTTER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

AN381-8-48: PIN,COTTER.

The PIN,COTTER is a the manufacturer industrial component. Key specifications include diameter: 0.220 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN, material: STEEL COMP 302 OR STEEL COMP 304 OVERALL, point_type: EXTENDED PRONG SQUARE CUT, hardness_rating: 55.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 67.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM OVERALL, style_designator: STANDARD, underloop_length: 2.875 INCHES MINIMUM AND 3.125 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-243-1167, 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
AN381-8-48
NSN: 5315-00-243-1167
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
diameter0.220 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
materialSTEEL COMP 302 OR STEEL COMP 304 OVERALL
point_typeEXTENDED PRONG SQUARE CUT
hardness_rating55.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 67.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM OVERALL
style_designatorSTANDARD
underloop_length2.875 INCHES MINIMUM AND 3.125 INCHES MAXIMUM IN
surface_treatmentPASSIVATE OVERALL
departure_from_cited_designatorAS MODIFIED BY PACKING DATA
material_document_and_classificationASTM A493 ASSN STD ALL MATERIAL RESPONSES OVERALL
surface_treatment_document_and_classificationASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
NSN5315-00-243-1167
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: AN381-8-48 · 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 DOCUMENT AND CLASSIFICATION: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
HARDNESS RATING: 55.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 67.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM OVERALL
•
STYLE DESIGNATOR: STANDARD
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A493 ASSN STD ALL MATERIAL RESPONSES OVERALL
•
DIAMETER: 0.220 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
•
DEPARTURE FROM CITED DESIGNATOR: AS MODIFIED BY PACKING DATA
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
UNDERLOOP LENGTH: 2.875 INCHES MINIMUM AND 3.125 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING55.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 67.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM OVERALL
STYLE DESIGNATORSTANDARD
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A493 ASSN STD ALL MATERIAL RESPONSES OVERALL
DIAMETER0.220 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY PACKING DATA
SURFACE TREATMENTPASSIVATE OVERALL
UNDERLOOP LENGTH2.875 INCHES MINIMUM AND 3.125 INCHES MAXIMUM IN
MATERIALSTEEL COMP 302 OR STEEL COMP 304 OVERALL
POINT TYPEEXTENDED PRONG SQUARE CUT
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 5
NASM24665Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
MS24665-643Reference document
Same NSN cross-reference
Reference document — Secondary reference
122-2422339 PIECE 20Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
122-5277660 ITEM 48Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
245-4510951M5Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AN381-8-48?
AN381-8-48 is a PIN,COTTER.
What parts can replace AN381-8-48?
There are 5 known substitutes for AN381-8-48: NASM24665, MS24665-643, 122-2422339 PIECE 20 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AN381-8-48?
AN381-8-48 is cataloged in the U.S. Government catalog under NSN 5315-00-243-1167. 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.