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E-252 PIECE 29 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

E-252 PIECE 29: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, thickness: 0.062 INCHES NOMINAL IN, overall_diameter: 2.250 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: HEXAGON, hole_width_across_flats: 0.547 INCHES MINIMUM AND 0.561 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-220-8705, 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
E-252 PIECE 29
NSN: 5310-01-220-8705
FSC: 5310 — Nuts and Washers
CAGE: 74965 — CLARK-RELIANCE LLC DBA JERGUSON GAGE & VALVE (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
thickness0.062 INCHES NOMINAL IN
overall_diameter2.250 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleHEXAGON
hole_width_across_flats0.547 INCHES MINIMUM AND 0.561 INCHES MAXIMUM IN
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationP-4917-R,FSCM 74965 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-220-8705
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: E-252 PIECE 29 · 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: P-4917-R,FSCM 74965 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL COMP 304 OVERALL
•
HOLE WIDTH ACROSS FLATS: 0.547 INCHES MINIMUM AND 0.561 INCHES MAXIMUM IN
•
CENTER HOLE SHAPE STYLE: HEXAGON
•
THICKNESS: 0.062 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER2.250 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONP-4917-R,FSCM 74965 MFR REF SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL COMP 304 OVERALL
HOLE WIDTH ACROSS FLATS0.547 INCHES MINIMUM AND 0.561 INCHES MAXIMUM IN
CENTER HOLE SHAPE STYLEHEXAGON
THICKNESS0.062 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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is E-252 PIECE 29?
E-252 PIECE 29 is a WASHER,FLAT.
What is the NSN for E-252 PIECE 29?
E-252 PIECE 29 is cataloged in the U.S. Government catalog under NSN 5310-01-220-8705. 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.