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1MT1671 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

1MT1671: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1060 OVERALL, thickness: 0.062 INCHES NOMINAL IN, hole_diameter: 1.250 INCHES NOMINAL IN, overall_diameter: 2.250 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-276-3487, 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
1MT1671
NSN: 5310-00-276-3487
FSC: 5310 — Nuts and Washers
CAGE: 26697 — LOAD KING, LLC DIV LOAD KING (USA)
SPECIFICATIONS
materialSTEEL COMP 1060 OVERALL
thickness0.062 INCHES NOMINAL IN
hole_diameter1.250 INCHES NOMINAL IN
overall_diameter2.250 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-276-3487
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1MT1671 · 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: 2.250 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL COMP 1060 OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 1.250 INCHES NOMINAL IN
•
THICKNESS: 0.062 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER2.250 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL COMP 1060 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER1.250 INCHES NOMINAL IN
THICKNESS0.062 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 2
W1-8X1 1-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
STA3-3Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1MT1671?
1MT1671 is a WASHER,FLAT.
What parts can replace 1MT1671?
There are 2 known substitutes for 1MT1671: W1-8X1 1-4, STA3-3. Substitute compatibility should be verified for your specific system.
What is the NSN for 1MT1671?
1MT1671 is cataloged in the U.S. Government catalog under NSN 5310-00-276-3487. 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.