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340910 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

340910: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 172 OVERALL, hole_diameter: 0.270 INCHES NOMINAL IN, surface_treatment: TIN OVERALL, material_thickness: 0.012 INCHES NOMINAL IN, material_document_and_classification: ASTM B194 ASSN STD SINGLE MATERIAL RESPONSE OVERALL, surface_treatment_document_and_classification: MIL-T-10727,TY1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-374-3291, 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
340910
NSN: 5310-01-374-3291
NIINs: 013743291, 016499955
FSC: 5310 — Nuts and Washers
CAGE: 80249 — BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. (USA)
SPECIFICATIONS
materialCOPPER ALLOY 172 OVERALL
hole_diameter0.270 INCHES NOMINAL IN
surface_treatmentTIN OVERALL
material_thickness0.012 INCHES NOMINAL IN
material_document_and_classificationASTM B194 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationMIL-T-10727,TY1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-374-3291
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 340910 · 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: MIL-T-10727,TY1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM B194 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL THICKNESS: 0.012 INCHES NOMINAL IN
•
SURFACE TREATMENT: TIN OVERALL
•
MATERIAL: COPPER ALLOY 172 OVERALL
•
HOLE DIAMETER: 0.270 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-T-10727,TY1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B194 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL THICKNESS0.012 INCHES NOMINAL IN
SURFACE TREATMENTTIN OVERALL
MATERIALCOPPER ALLOY 172 OVERALL
HOLE DIAMETER0.270 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
613-71Reference 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 340910?
340910 is a WASHER,LOCK.
What parts can replace 340910?
There is 1 known substitute for 340910: 613-71. Substitute compatibility should be verified for your specific system.
What is the NSN for 340910?
340910 is cataloged in the U.S. Government catalog under NSN 5310-01-374-3291. 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.