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122-2255891-53 — PIN,STRAIGHT,HEADED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

122-2255891-53: PIN,STRAIGHT,HEADED.

The PIN,STRAIGHT,HEADED is a the manufacturer industrial component. Key specifications include height: 0.500 INCHES NOMINAL IN, diameter: 1.998 INCHES MINIMUM AND 1.999 INCHES MAXIMUM IN, material: STEEL COMP 4140 OVERALL, head_style: FLAT, chamfer_length: 0.094 INCHES NOMINAL IN, surface_finish: 63.0 MICROINCHES LONG SHANK. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-292-3418, 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
122-2255891-53
NSN: 5315-01-292-3418
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 14153 — DEFENSE LOGISTICS AGENCY DBA DEFENSE SUPPLY CENTER PHILADELPHIA (USA)
SPECIFICATIONS
height0.500 INCHES NOMINAL IN
diameter1.998 INCHES MINIMUM AND 1.999 INCHES MAXIMUM IN
materialSTEEL COMP 4140 OVERALL
head_styleFLAT
chamfer_length0.094 INCHES NOMINAL IN
surface_finish63.0 MICROINCHES LONG SHANK
special_featuresTWO WRENCHING HOLES 0.562 IN. DIA. ON HEAD; UNDER HEAD RELIEF PERMITTED IN
style_designatorSTRAIGHT
pin_chamfer_angle45.0 DEGREES NOMINAL
pin_head_diameter3.000 INCHES NOMINAL IN
under_head_length7.125 INCHES NOMINAL IN
material_document_and_classificationMIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5315-01-292-3418
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 122-2255891-53 · 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: 63.0 MICROINCHES LONG SHANK
•
CHAMFER LENGTH: 0.094 INCHES NOMINAL IN
•
UNDER HEAD LENGTH: 7.125 INCHES NOMINAL IN
•
PIN CHAMFER ANGLE: 45.0 DEGREES NOMINAL
•
STYLE DESIGNATOR: STRAIGHT
•
PIN HEAD DIAMETER: 3.000 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
DIAMETER: 1.998 INCHES MINIMUM AND 1.999 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES LONG SHANK
CHAMFER LENGTH0.094 INCHES NOMINAL IN
UNDER HEAD LENGTH7.125 INCHES NOMINAL IN
PIN CHAMFER ANGLE45.0 DEGREES NOMINAL
STYLE DESIGNATORSTRAIGHT
PIN HEAD DIAMETER3.000 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
DIAMETER1.998 INCHES MINIMUM AND 1.999 INCHES MAXIMUM IN
HEAD STYLEFLAT
HEIGHT0.500 INCHES NOMINAL 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 1
122-2255891 PIECE 53Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 122-2255891-53?
122-2255891-53 is a PIN,STRAIGHT,HEADED.
What parts can replace 122-2255891-53?
There is 1 known substitute for 122-2255891-53: 122-2255891 PIECE 53. Substitute compatibility should be verified for your specific system.
What is the NSN for 122-2255891-53?
122-2255891-53 is cataloged in the U.S. Government catalog under NSN 5315-01-292-3418. 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.