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12543055-007 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

12543055-007: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.134 INCHES NOMINAL IN, hole_diameter: 0.931 INCHES NOMINAL IN, overall_diameter: 1.780 INCHES NOMINAL IN, special_features: CHEMICAL PASSIVATION ASTM A967; FINISH 1AW 12424710 M-4, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-644-6884, 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
12543055-007
NSN: 5310-01-644-6884
FSC: 5310 — Nuts and Washers
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.134 INCHES NOMINAL IN
hole_diameter0.931 INCHES NOMINAL IN
overall_diameter1.780 INCHES NOMINAL IN
special_featuresCHEMICAL PASSIVATION ASTM A967; FINISH 1AW 12424710 M-4
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identification2320015953994
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationASTM F436/F436M ASSN STD SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyWASHER PLAIN
NSN5310-01-644-6884
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12543055-007 · 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: 1.780 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM F436/F436M ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER1.780 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM F436/F436M ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SPECIAL FEATURESCHEMICAL PASSIVATION ASTM A967; FINISH 1AW 12424710 M-4
PERIPHERAL SHAPE STYLEROUND
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER PLAIN
END ITEM IDENTIFICATION2320015953994
MATERIALSTEEL OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.931 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
12543055Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 12543055-007?
12543055-007 is a WASHER,FLAT.
What parts can replace 12543055-007?
There is 1 known substitute for 12543055-007: 12543055. Substitute compatibility should be verified for your specific system.
What is the NSN for 12543055-007?
12543055-007 is cataloged in the U.S. Government catalog under NSN 5310-01-644-6884. 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.