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12321946 — PIN,SHOULDER,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

12321946: PIN,SHOULDER,HEADLESS.

The PIN,SHOULDER,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 OVERALL, shank_length: 0.750 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.600 INCHES NOMINAL IN, overall_length: 2.620 INCHES NOMINAL IN, shank_diameter: 0.750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-226-0553, 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
12321946
NSN: 5315-01-226-0553
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OVERALL
shank_length0.750 INCHES NOMINAL IN
thread_class2A A
thread_length0.600 INCHES NOMINAL IN
overall_length2.620 INCHES NOMINAL IN
shank_diameter0.750 INCHES NOMINAL IN
first_end_styleCHAMFERED
second_end_styleOVAL
special_featuresUSED ON 2350-01-087-1095
style_designatorSHOULDER
thread_directionRIGHT-HAND
shoulder_diameter0.808 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN
NSN5315-01-226-0553
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12321946 · 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
•
SHANK DIAMETER: 0.750 INCHES NOMINAL IN
•
FIRST END TAPER LENGTH: 0.075 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
•
FIRST END LOCATION: THREADED END
•
THREAD LENGTH: 0.600 INCHES NOMINAL IN
•
FIRST END STYLE: CHAMFERED
•
SHANK LENGTH: 0.750 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SHOULDER
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A331 ASSN STD 1ST MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.750 INCHES NOMINAL IN
FIRST END TAPER LENGTH0.075 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
FIRST END LOCATIONTHREADED END
THREAD LENGTH0.600 INCHES NOMINAL IN
FIRST END STYLECHAMFERED
SHANK LENGTH0.750 INCHES NOMINAL IN
STYLE DESIGNATORSHOULDER
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A331 ASSN STD 1ST MATERIAL RESPONSE OVERALL
OVERALL LENGTH2.620 INCHES NOMINAL IN
FIRST END TAPER ANGLE45.0 DEGREES NOMINAL
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

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 12321946?
12321946 is a PIN,SHOULDER,HEADLESS.
What is the NSN for 12321946?
12321946 is cataloged in the U.S. Government catalog under NSN 5315-01-226-0553. 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.