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5223931 — PIN,STRAIGHT,HEADED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5223931: PIN,STRAIGHT,HEADED.

The PIN,STRAIGHT,HEADED is a the manufacturer industrial component. Key specifications include height: 0.125 INCHES NOMINAL IN, diameter: 0.308 INCHES MINIMUM AND 0.311 INCHES MAXIMUM IN, material: STEEL COMP 8620 OR STEEL COMP 8720 OVERALL, head_style: FLAT CHAMFER, chamfer_length: 0.031 INCHES NOMINAL IN, surface_finish: 125.0 MICROINCHES OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-522-3931, 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
5223931
NSN: 5315-00-522-3931
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
height0.125 INCHES NOMINAL IN
diameter0.308 INCHES MINIMUM AND 0.311 INCHES MAXIMUM IN
materialSTEEL COMP 8620 OR STEEL COMP 8720 OVERALL
head_styleFLAT CHAMFER
chamfer_length0.031 INCHES NOMINAL IN
surface_finish125.0 MICROINCHES OVERALL
style_designatorSTRAIGHT
features_providedCASEHARDENED
pin_chamfer_angle45.0 DEGREES NOMINAL
pin_head_diameter0.547 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN
surface_treatmentPHOSPHATE MANGANESE OR PHOSPHATE ZINC OVERALL
under_head_length1.047 INCHES MINIMUM AND 1.078 INCHES MAXIMUM IN
NSN5315-00-522-3931
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5223931 · 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
•
CHAMFER LENGTH: 0.031 INCHES NOMINAL IN
•
HOLE ARRANGEMENT STYLE: ONE END DRILLED
•
UNDER HEAD LENGTH: 1.047 INCHES MINIMUM AND 1.078 INCHES MAXIMUM IN
•
PIN CHAMFER ANGLE: 45.0 DEGREES NOMINAL
•
FIRST HOLE DIAMETER: 0.016 INCHES MINIMUM AND 0.047 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: STRAIGHT
•
PIN HEAD DIAMETER: 0.547 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH125.0 MICROINCHES OVERALL
CHAMFER LENGTH0.031 INCHES NOMINAL IN
HOLE ARRANGEMENT STYLEONE END DRILLED
UNDER HEAD LENGTH1.047 INCHES MINIMUM AND 1.078 INCHES MAXIMUM IN
PIN CHAMFER ANGLE45.0 DEGREES NOMINAL
FIRST HOLE DIAMETER0.016 INCHES MINIMUM AND 0.047 INCHES MAXIMUM IN
STYLE DESIGNATORSTRAIGHT
PIN HEAD DIAMETER0.547 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM 1322 ASSN STD ALL MATERIAL RESPONSES OR ASTM A331 ASSN STD ALL MATERIAL RESPONSES OVERALL
DIAMETER0.308 INCHES MINIMUM AND 0.311 INCHES MAXIMUM IN
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5223931?
5223931 is a PIN,STRAIGHT,HEADED.
What is the NSN for 5223931?
5223931 is cataloged in the U.S. Government catalog under NSN 5315-00-522-3931. 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.