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81853 — PIN,STRAIGHT,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

81853: PIN,STRAIGHT,HEADLESS.

The PIN,STRAIGHT,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, surface_finish: 250.0 MICROINCHES OVERALL, first_end_style: RADIUS, hardness_rating: 42.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL, pin_overall_length: 0.400 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN, first_hole_diameter: 0.035 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-945-5769, 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
81853
NSN: 5315-00-945-5769
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 11599 — TRIUMPH ENGINE CONTROL SYSTEMS LLC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
surface_finish250.0 MICROINCHES OVERALL
first_end_styleRADIUS
hardness_rating42.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
pin_overall_length0.400 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN
first_hole_diameter0.035 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
pin_overall_diameter0.1552 INCHES MINIMUM AND 0.1557 INCHES MAXIMUM IN
hole_arrangement_styleDRILLED THRU CENTER
first_end_corner_radius0.005 INCHES MINIMUM AND 0.015 INCHES MAXIMUM IN
material_document_and_classificationAMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
second_end_relationship_with_first_endIDENTICAL
NSN5315-00-945-5769
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 81853 · 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 FINISH: 250.0 MICROINCHES OVERALL
•
HOLE ARRANGEMENT STYLE: DRILLED THRU CENTER
•
FIRST END STYLE: RADIUS
•
FIRST HOLE DIAMETER: 0.035 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
•
HARDNESS RATING: 42.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
PIN OVERALL DIAMETER: 0.1552 INCHES MINIMUM AND 0.1557 INCHES MAXIMUM IN
•
PIN OVERALL LENGTH: 0.400 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH250.0 MICROINCHES OVERALL
HOLE ARRANGEMENT STYLEDRILLED THRU CENTER
FIRST END STYLERADIUS
FIRST HOLE DIAMETER0.035 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
HARDNESS RATING42.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
PIN OVERALL DIAMETER0.1552 INCHES MINIMUM AND 0.1557 INCHES MAXIMUM IN
PIN OVERALL LENGTH0.400 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
MATERIALSTEEL CORROSION RESISTING OVERALL
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
CM-81853Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 81853?
81853 is a PIN,STRAIGHT,HEADLESS.
What parts can replace 81853?
There is 1 known substitute for 81853: CM-81853. Substitute compatibility should be verified for your specific system.
What is the NSN for 81853?
81853 is cataloged in the U.S. Government catalog under NSN 5315-00-945-5769. 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.