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S6137-91503-104 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

S6137-91503-104: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include thickness: 0.058 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN, overall_diameter: 0.750 INCHES NOMINAL IN, special_features: LOCALSR UNKNOWN;MATERIAL IS ST4130;MATERIAL DOC MIL SPEC 18729;SURFACE TREATMENT CADMIUM;DIAM .380-.385, surface_treatment_document_and_classification: QQ-4-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-012-6097, 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
S6137-91503-104
NSN: 5310-00-012-6097
FSC: 5310 — Nuts and Washers
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
thickness0.058 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
overall_diameter0.750 INCHES NOMINAL IN
special_featuresLOCALSR UNKNOWN;MATERIAL IS ST4130;MATERIAL DOC MIL SPEC 18729;SURFACE TREATMENT CADMIUM;DIAM .380-.385
surface_treatment_document_and_classificationQQ-4-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-012-6097
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: S6137-91503-104 · 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-4-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
OVERALL DIAMETER: 0.750 INCHES NOMINAL IN
•
THICKNESS: 0.058 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-4-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
OVERALL DIAMETER0.750 INCHES NOMINAL IN
SPECIAL FEATURESLOCALSR UNKNOWN;MATERIAL IS ST4130;MATERIAL DOC MIL SPEC 18729;SURFACE TREATMENT CADMIUM;DIAM .380-.385
THICKNESS0.058 INCHES MINIMUM AND 0.060 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

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 S6137-91503-104?
S6137-91503-104 is a WASHER,FLAT.
What is the NSN for S6137-91503-104?
S6137-91503-104 is cataloged in the U.S. Government catalog under NSN 5310-00-012-6097. 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.