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37WS8 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

37WS8: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.393 INCHES MAXIMUM IN, outside_diameter: 0.683 INCHES MAXIMUM IN, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: ZINC OR CADMIUM OVERALL, material_thickness: 0.094 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-484-0032, 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
37WS8
NSN: 5310-01-484-0032
FSC: 5310 — Nuts and Washers
CAGE: 4W343 — INTEGRITY FASTENERS OC, INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.393 INCHES MAXIMUM IN
outside_diameter0.683 INCHES MAXIMUM IN
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentZINC OR CADMIUM OVERALL
material_thickness0.094 INCHES NOMINAL IN
end_item_identificationRLST VEH INTE;AIR TRAFFIC CONTROL LANDING
material_document_and_classificationAISI 4037 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-484-0032
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 37WS8 · 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: AISI 4037 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.683 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.094 INCHES NOMINAL IN
•
COLOR: YELLOW OVERALL
•
SURFACE TREATMENT: ZINC OR CADMIUM OVERALL
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
MATERIAL DOCUMENT AND CLASSIFICATIONAISI 4037 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.683 INCHES MAXIMUM IN
MATERIAL THICKNESS0.094 INCHES NOMINAL IN
COLORYELLOW OVERALL
SURFACE TREATMENTZINC OR CADMIUM OVERALL
END ITEM IDENTIFICATIONRLST VEH INTE;AIR TRAFFIC CONTROL LANDING
MATERIALSTEEL OVERALL
HOLE DIAMETER0.393 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 2
18-09020-03Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
18-09020Reference document
Same NSN cross-reference
Reference document — Vendor item drawing 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 37WS8?
37WS8 is a WASHER,LOCK.
What parts can replace 37WS8?
There are 2 known substitutes for 37WS8: 18-09020-03, 18-09020. Substitute compatibility should be verified for your specific system.
What is the NSN for 37WS8?
37WS8 is cataloged in the U.S. Government catalog under NSN 5310-01-484-0032. 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.