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5856-40-677-7137 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5856-40-677-7137: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY AND COPPER ALLOY OVERALL, hole_diameter: 0.254 INCHES MINIMUM AND 0.262 INCHES MAXIMUM IN, outside_diameter: 0.365 INCHES NOMINAL IN, style_designator: SPLIT HELICAL-RIGHT HAND, material_thickness: 0.078 INCHES NOMINAL IN, nondefinitive_spec/std_data: G CLASS. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-135-3559, 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
5856-40-677-7137
NSN: 5310-01-135-3559
FSC: 5310 — Nuts and Washers
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY AND COPPER ALLOY OVERALL
hole_diameter0.254 INCHES MINIMUM AND 0.262 INCHES MAXIMUM IN
outside_diameter0.365 INCHES NOMINAL IN
style_designatorSPLIT HELICAL-RIGHT HAND
material_thickness0.078 INCHES NOMINAL IN
nondefinitive_spec/std_dataG CLASS
material_document_and_classificationQQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-135-3559
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5856-40-677-7137 · 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
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.365 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.078 INCHES NOMINAL IN
•
NONDEFINITIVE SPEC/STD DATA: G CLASS
•
MATERIAL: NICKEL ALLOY AND COPPER ALLOY OVERALL
•
HOLE DIAMETER: 0.254 INCHES MINIMUM AND 0.262 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.365 INCHES NOMINAL IN
MATERIAL THICKNESS0.078 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATAG CLASS
MATERIALNICKEL ALLOY AND COPPER ALLOY OVERALL
HOLE DIAMETER0.254 INCHES MINIMUM AND 0.262 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 3
FFW84 CL-G STY- 5 .25O NOM NICUReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
FF-W-84Reference document
Same NSN cross-reference
Reference document — Identification reference
413-4491193 PIECE 50Reference 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 5856-40-677-7137?
5856-40-677-7137 is a WASHER,LOCK.
What parts can replace 5856-40-677-7137?
There are 3 known substitutes for 5856-40-677-7137: FFW84 CL-G STY- 5 .25O NOM NICU, FF-W-84, 413-4491193 PIECE 50. Substitute compatibility should be verified for your specific system.
What is the NSN for 5856-40-677-7137?
5856-40-677-7137 is cataloged in the U.S. Government catalog under NSN 5310-01-135-3559. 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.