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74D115176-2253 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

74D115176-2253: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include length: 1.250 INCHES NOMINAL IN, material: STEEL COMP 4140 OVERALL, thickness: 0.250 INCHES NOMINAL IN, hole_diameter: 0.203 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN, width_across_flats: 0.500 INCHES NOMINAL IN, peripheral_shape_style: RECTANGULAR. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-490-3297, 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
74D115176-2253
NSN: 5310-01-490-3297
FSC: 5310 — Nuts and Washers
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
length1.250 INCHES NOMINAL IN
materialSTEEL COMP 4140 OVERALL
thickness0.250 INCHES NOMINAL IN
hole_diameter0.203 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
width_across_flats0.500 INCHES NOMINAL IN
peripheral_shape_styleRECTANGULAR
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationAMS6382,COND D ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-490-3297
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 74D115176-2253 · 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: 0.500 INCHES NOMINAL IN
•
LENGTH: 1.250 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS6382,COND D ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: RECTANGULAR
•
MATERIAL: STEEL COMP 4140 OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.203 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.500 INCHES NOMINAL IN
LENGTH1.250 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS6382,COND D ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLERECTANGULAR
MATERIALSTEEL COMP 4140 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.203 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
THICKNESS0.250 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 1
74D115176Reference 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 74D115176-2253?
74D115176-2253 is a WASHER,FLAT.
What parts can replace 74D115176-2253?
There is 1 known substitute for 74D115176-2253: 74D115176. Substitute compatibility should be verified for your specific system.
What is the NSN for 74D115176-2253?
74D115176-2253 is cataloged in the U.S. Government catalog under NSN 5310-01-490-3297. 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.