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B800981-1 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

B800981-1: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: CELLULOSE OVERALL, thickness: 0.031 INCHES NOMINAL IN, hole_diameter: 1.344 INCHES NOMINAL IN, overall_diameter: 1.906 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-141-7997, 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
B800981-1
NSN: 5310-00-141-7997
FSC: 5310 — Nuts and Washers
CAGE: 99251 — MISSION SYSTEMS DAVENPORT INC. (USA)
SPECIFICATIONS
materialCELLULOSE OVERALL
thickness0.031 INCHES NOMINAL IN
hole_diameter1.344 INCHES NOMINAL IN
overall_diameter1.906 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-141-7997
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: B800981-1 · 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
•
OVERALL DIAMETER: 1.906 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: CELLULOSE OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 1.344 INCHES NOMINAL IN
•
THICKNESS: 0.031 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER1.906 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
MATERIALCELLULOSE OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER1.344 INCHES NOMINAL IN
THICKNESS0.031 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 3
800981Reference document
Same NSN cross-reference
Reference document — Secondary reference
800981-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
B000981-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B800981-1?
B800981-1 is a WASHER,FLAT.
What parts can replace B800981-1?
There are 3 known substitutes for B800981-1: 800981, 800981-1, B000981-1. Substitute compatibility should be verified for your specific system.
What is the NSN for B800981-1?
B800981-1 is cataloged in the U.S. Government catalog under NSN 5310-00-141-7997. 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.