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501321-1 — PIN,STRAIGHT,HEADED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

501321-1: PIN,STRAIGHT,HEADED.

The PIN,STRAIGHT,HEADED is a the manufacturer industrial component. Key specifications include special_features: MAIN TELESCOPE ASSY, end_item_identification: AN/FSQ-114. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-501-3211, 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
501321-1
NSN: 5315-00-501-3211
NIINs: 005013211, 011720198
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 19204 — ARMY, UNITED STATES DEPARTMENT OF THE DBA ROCK ISLAND ARSENAL JMTC (USA)
SPECIFICATIONS
special_featuresMAIN TELESCOPE ASSY
end_item_identificationAN/FSQ-114
NSN5315-00-501-3211
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 501321-1 · 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: 125.0 MICROINCHES OVERALL
•
UNDER HEAD LENGTH: 0.770 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN
•
END RADIUS: 0.109 INCHES NOMINAL IN
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HARDNESS RATING: 48.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL
•
STYLE DESIGNATOR: STRAIGHT
•
PIN HEAD DIAMETER: 0.130 INCHES MINIMUM AND 0.134 INCHES MAXIMUM IN
•
DIAMETER: 0.108 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
•
HEAD STYLE: FLAT COUNTERSUNK (INCLUDED ANGLE LESS THAN 135 DEG)
TECHNICAL CHARACTERISTICS
SURFACE FINISH125.0 MICROINCHES OVERALL
UNDER HEAD LENGTH0.770 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN
END RADIUS0.109 INCHES NOMINAL IN
HARDNESS RATING48.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORSTRAIGHT
PIN HEAD DIAMETER0.130 INCHES MINIMUM AND 0.134 INCHES MAXIMUM IN
DIAMETER0.108 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
HEAD STYLEFLAT COUNTERSUNK (INCLUDED ANGLE LESS THAN 135 DEG)
SURFACE TREATMENTPHOSPHATE MANGANESE OVERALL
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 501321-1?
501321-1 is a PIN,STRAIGHT,HEADED.
What is the NSN for 501321-1?
501321-1 is cataloged in the U.S. Government catalog under NSN 5315-00-501-3211. 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.