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21511089 — PIN,STRAIGHT,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

21511089: PIN,STRAIGHT,HEADLESS.

The PIN,STRAIGHT,HEADLESS is a the manufacturer industrial component. Key specifications include special_features: STRAIGHT DOWEL, BEARING TO HOUSING, pin_overall_length: 0.875 INCHES NOMINAL IN, pin_overall_diameter: 0.3750 INCHES NOMINAL IN, end_item_identification: CAMSHAFT THRUST BEARING, DAMPER AND TACHOMETER GENERATOR FOR ALCO 251 DIESEL ENGINE. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-271-4560, 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
21511089
NSN: 5315-00-271-4560
NIINs: 002714560, 014700128
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
special_featuresSTRAIGHT DOWEL, BEARING TO HOUSING
pin_overall_length0.875 INCHES NOMINAL IN
pin_overall_diameter0.3750 INCHES NOMINAL IN
end_item_identificationCAMSHAFT THRUST BEARING, DAMPER AND TACHOMETER GENERATOR FOR ALCO 251 DIESEL ENGINE
NSN5315-00-271-4560
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 21511089 · 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 TAPER LENGTH: 0.045 INCHES NOMINAL IN
•
FIRST END STYLE: CHAMFERED
•
FIRST END TAPER ANGLE: 10.0 DEGREES NOMINAL
•
PIN OVERALL DIAMETER: 0.3750 INCHES MINIMUM AND 0.3753 INCHES MAXIMUM IN
•
PIN OVERALL LENGTH: 0.875 INCHES NOMINAL IN
•
SECOND END RELATIONSHIP WITH FIRST END: NOT IDENTICAL
•
SECOND END STYLE: RADIUS
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
FIRST END TAPER LENGTH0.045 INCHES NOMINAL IN
FIRST END STYLECHAMFERED
FIRST END TAPER ANGLE10.0 DEGREES NOMINAL
PIN OVERALL DIAMETER0.3750 INCHES MINIMUM AND 0.3753 INCHES MAXIMUM IN
PIN OVERALL LENGTH0.875 INCHES NOMINAL IN
SECOND END RELATIONSHIP WITH FIRST ENDNOT IDENTICAL
SECOND END STYLERADIUS
MATERIALSTEEL OVERALL
SECOND END CORNER RADIUS0.078 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 9
164254PC3Reference document
Same NSN cross-reference
Reference document — Secondary reference
290074PC7Reference document
Same NSN cross-reference
Reference document — Secondary reference
206565PC2Reference document
Same NSN cross-reference
Reference document — Secondary reference
177052PC303Reference document
Same NSN cross-reference
Reference document — Secondary reference
351379PC163Reference document
Same NSN cross-reference
Reference document — Secondary reference
260430PC54Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 21511089?
21511089 is a PIN,STRAIGHT,HEADLESS.
What parts can replace 21511089?
There are 9 known substitutes for 21511089: 164254PC3, 290074PC7, 206565PC2 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21511089?
21511089 is cataloged in the U.S. Government catalog under NSN 5315-00-271-4560. This indicates validated use in U.S. government and defense supply chains.
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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.