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2649-31050-N253 — WASHER,SHOULDERED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2649-31050-N253: WASHER,SHOULDERED.

The WASHER,SHOULDERED is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON OVERALL, hole_diameter: 0.253 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN, shoulder_height: 0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN, outside_diameter: 0.745 INCHES MINIMUM AND 0.765 INCHES MAXIMUM IN, style_designator: SHOULDERED, shoulder_diameter: 0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-124-2057, 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
2649-31050-N253
NSN: 5310-01-124-2057
FSC: 5310 — Nuts and Washers
CAGE: 1YGB8 — CAREY MANUFACTURING CO, INC DBA AMATOM ELECTRONIC HARDWARE DIV AMATOM ELECTRONIC HARDWARE (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON OVERALL
hole_diameter0.253 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN
shoulder_height0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
outside_diameter0.745 INCHES MINIMUM AND 0.765 INCHES MAXIMUM IN
style_designatorSHOULDERED
shoulder_diameter0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
material_thickness0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
material_document_and_classificationMIL-M-20693 MIL SPEC SINGLE MATERIAL RESPONSE OR L-P-410 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-124-2057
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2649-31050-N253 · 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
•
SHOULDER HEIGHT: 0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SHOULDERED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-M-20693 MIL SPEC SINGLE MATERIAL RESPONSE OR L-P-410 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.745 INCHES MINIMUM AND 0.765 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
•
SHOULDER DIAMETER: 0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC POLYAMIDE NYLON OVERALL
•
HOLE DIAMETER: 0.253 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SHOULDER HEIGHT0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
STYLE DESIGNATORSHOULDERED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-M-20693 MIL SPEC SINGLE MATERIAL RESPONSE OR L-P-410 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.745 INCHES MINIMUM AND 0.765 INCHES MAXIMUM IN
MATERIAL THICKNESS0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
SHOULDER DIAMETER0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
MATERIALPLASTIC POLYAMIDE NYLON OVERALL
HOLE DIAMETER0.253 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 1
SMA858657-3Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
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 2649-31050-N253?
2649-31050-N253 is a WASHER,SHOULDERED.
What parts can replace 2649-31050-N253?
There is 1 known substitute for 2649-31050-N253: SMA858657-3. Substitute compatibility should be verified for your specific system.
What is the NSN for 2649-31050-N253?
2649-31050-N253 is cataloged in the U.S. Government catalog under NSN 5310-01-124-2057. 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.