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855621 — PIN,SHOULDER,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

855621: PIN,SHOULDER,HEADLESS.

The PIN,SHOULDER,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, corner_shape: SQUARE ALL CORNERS, shank_length: 0.500 INCHES NOMINAL IN, thread_class: 3A A, thread_length: 0.188 INCHES NOMINAL IN, overall_length: 1.593 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-308-3568, 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
855621
NSN: 5315-00-308-3568
NIINs: 003083568, 003626772
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
corner_shapeSQUARE ALL CORNERS
shank_length0.500 INCHES NOMINAL IN
thread_class3A A
thread_length0.188 INCHES NOMINAL IN
overall_length1.593 INCHES NOMINAL IN
surface_finish250.000 MICROINCHES OVERALL
first_end_styleSLOTTED
second_end_styleSQUARE
style_designatorSOLID, PLAIN, NO OUTSIDE FLANGES
thread_directionRIGHT-HAND
shoulder_diameter0.375 INCHES NOMINAL IN
NSN5315-00-308-3568
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 855621 · 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: 250.000 MICROINCHES OVERALL
•
FIRST END LOCATION: GROOVED END
•
FIRST END SLOT WIDTH: 0.048 INCHES NOMINAL IN
•
THREAD LENGTH: 0.188 INCHES NOMINAL IN
•
FIRST END STYLE: SLOTTED
•
SHANK LENGTH: 0.500 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISH250.000 MICROINCHES OVERALL
FIRST END LOCATIONGROOVED END
FIRST END SLOT WIDTH0.048 INCHES NOMINAL IN
THREAD LENGTH0.188 INCHES NOMINAL IN
FIRST END STYLESLOTTED
SHANK LENGTH0.500 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH1.593 INCHES NOMINAL IN
SECOND END RELATIONSHIP WITH FIRST ENDNOT IDENTICAL
THREAD DIRECTIONRIGHT-HAND
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 855621?
855621 is a PIN,SHOULDER,HEADLESS.
What is the NSN for 855621?
855621 is cataloged in the U.S. Government catalog under NSN 5315-00-308-3568. This indicates validated use in U.S. government and defense supply chains.
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