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M-12-1-20 — WASHER,SPRING TENSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

M-12-1-20: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, hole_diameter: 0.150 INCHES NOMINAL IN, overall_height: 0.057 INCHES NOMINAL IN, outside_diameter: 0.350 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-932-8129, 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
M-12-1-20
NSN: 5310-00-932-8129
NIINs: 009328129, 014241268
FSC: 5310 — Nuts and Washers
CAGE: 98810 — AEROSONIC LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
hole_diameter0.150 INCHES NOMINAL IN
overall_height0.057 INCHES NOMINAL IN
outside_diameter0.350 INCHES NOMINAL IN
NSN5310-00-932-8129
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: M-12-1-20 · 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
•
OUTSIDE DIAMETER: 0.350 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY OVERALL
•
HOLE DIAMETER: 0.150 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.057 INCHES NOMINAL IN
OUTSIDE DIAMETER0.350 INCHES NOMINAL IN
MATERIALCOPPER ALLOY OVERALL
HOLE DIAMETER0.150 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
329RReference document
Same NSN cross-reference
Reference document — Design control — primary 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 M-12-1-20?
M-12-1-20 is a WASHER,SPRING TENSION.
What parts can replace M-12-1-20?
There is 1 known substitute for M-12-1-20: 329R. Substitute compatibility should be verified for your specific system.
What is the NSN for M-12-1-20?
M-12-1-20 is cataloged in the U.S. Government catalog under NSN 5310-00-932-8129. 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.