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91081A033 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

91081A033: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include length: 1.375 INCHES NOMINAL IN, material: STEEL OVERALL, thickness: 0.08 INCHES NOMINAL IN, hole_diameter: 0.562 INCHES NOMINAL IN, overall_diameter: 1.375 INCHES NOMINAL IN, special_features: THICKNESS IS 0.08 INCHES TO 0.14 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-627-3393, 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
91081A033
NSN: 5310-01-627-3393
FSC: 5310 — Nuts and Washers
CAGE: 80132 — NAVAL INVENTORY CONTROL POINT (USA)
SPECIFICATIONS
length1.375 INCHES NOMINAL IN
materialSTEEL OVERALL
thickness0.08 INCHES NOMINAL IN
hole_diameter0.562 INCHES NOMINAL IN
overall_diameter1.375 INCHES NOMINAL IN
special_featuresTHICKNESS IS 0.08 INCHES TO 0.14 INCHES IN
width_across_flats0.813 INCHES NOMINAL IN
peripheral_shape_styleRECTANGULAR
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
part_name_assigned_by_controlling_agencyUSS STANDARD WASHER
NSN5310-01-627-3393
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 91081A033 · 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
•
WIDTH ACROSS FLATS: 0.813 INCHES NOMINAL IN
•
LENGTH: 1.375 INCHES NOMINAL IN
•
OVERALL DIAMETER: 1.375 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: RECTANGULAR
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.813 INCHES NOMINAL IN
LENGTH1.375 INCHES NOMINAL IN
OVERALL DIAMETER1.375 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SPECIAL FEATURESTHICKNESS IS 0.08 INCHES TO 0.14 INCHES IN
PERIPHERAL SHAPE STYLERECTANGULAR
PART NAME ASSIGNED BY CONTROLLING AGENCYUSS STANDARD WASHER
MATERIALSTEEL OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.562 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 91081A033?
91081A033 is a WASHER,FLAT.
What is the NSN for 91081A033?
91081A033 is cataloged in the U.S. Government catalog under NSN 5310-01-627-3393. 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.