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4961137 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4961137: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.625 INCHES MINIMUM IN, style_designator: SPLIT HELICAL-RIGHT HAND, features_provided: CASEHARDENED, surface_treatment: ZINC OVERALL, surface_treatment_document_and_classification: QQ-Z-325 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-101-1504, 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
4961137
NSN: 5310-01-101-1504
FSC: 5310 — Nuts and Washers
CAGE: 29381 — GICHNER SYSTEMS GROUP, INC. DIV C5ISR DIVISION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.625 INCHES MINIMUM IN
style_designatorSPLIT HELICAL-RIGHT HAND
features_providedCASEHARDENED
surface_treatmentZINC OVERALL
surface_treatment_document_and_classificationQQ-Z-325 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-101-1504
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4961137 · 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 TREATMENT DOCUMENT AND CLASSIFICATION: QQ-Z-325 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
FEATURES PROVIDED: CASEHARDENED
•
SURFACE TREATMENT: ZINC OVERALL
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 0.625 INCHES MINIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-Z-325 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
FEATURES PROVIDEDCASEHARDENED
SURFACE TREATMENTZINC OVERALL
MATERIALSTEEL OVERALL
HOLE DIAMETER0.625 INCHES MINIMUM 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
H62LKWREGReference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4961137?
4961137 is a WASHER,LOCK.
What parts can replace 4961137?
There is 1 known substitute for 4961137: H62LKWREG. Substitute compatibility should be verified for your specific system.
What is the NSN for 4961137?
4961137 is cataloged in the U.S. Government catalog under NSN 5310-01-101-1504. 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.