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FS-01010 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

FS-01010: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, hole_diameter: 0.257 INCHES NOMINAL IN, outside_diameter: 0.478 INCHES NOMINAL IN, style_designator: FLAT INTERNAL TEETH, material_thickness: 0.023 INCHES NOMINAL IN, end_item_identification: 4120-01-671-6270. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-686-1838, 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
FS-01010
NSN: 5310-01-686-1838
FSC: 5310 — Nuts and Washers
CAGE: 0WJE1 — HDT EXPEDITIONARY SYSTEMS INC (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
hole_diameter0.257 INCHES NOMINAL IN
outside_diameter0.478 INCHES NOMINAL IN
style_designatorFLAT INTERNAL TEETH
material_thickness0.023 INCHES NOMINAL IN
end_item_identification4120-01-671-6270
NSN5310-01-686-1838
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: FS-01010 · 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: FLAT INTERNAL TEETH
•
OUTSIDE DIAMETER: 0.478 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.023 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 316 OVERALL
•
HOLE DIAMETER: 0.257 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORFLAT INTERNAL TEETH
OUTSIDE DIAMETER0.478 INCHES NOMINAL IN
MATERIAL THICKNESS0.023 INCHES NOMINAL IN
END ITEM IDENTIFICATION4120-01-671-6270
MATERIALSTEEL COMP 316 OVERALL
HOLE DIAMETER0.257 INCHES NOMINAL IN
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 FS-01010?
FS-01010 is a WASHER,LOCK.
What is the NSN for FS-01010?
FS-01010 is cataloged in the U.S. Government catalog under NSN 5310-01-686-1838. 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.