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Technical Data Sheet
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402021 — 402021

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

402021: 402021.

The 402021 is a the manufacturer industrial component. Key specifications include material: STEEL, ring_style: HOOKED, usage_design: EXTERNAL, inside_diameter: 0.250 INCHES NOMINAL IN, outside_diameter: 0.350 INCHES NOMINAL IN, material_diameter: 0.050 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-579-8288, 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
402021
NSN: 5325-00-579-8288
NIINs: 005798288, 010349967, 011287866
FSC: 5325 — Fastening Devices
CAGE: 66503 — WOODWARD, INC. DIV FUEL SYSTEMS AND CONTROLS (USA)
SPECIFICATIONS
materialSTEEL
ring_styleHOOKED
usage_designEXTERNAL
inside_diameter0.250 INCHES NOMINAL IN
outside_diameter0.350 INCHES NOMINAL IN
material_diameter0.050 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleROUND
NSN5325-00-579-8288
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 402021 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
USAGE DESIGN: EXTERNAL
•
MATERIAL DIAMETER: 0.050 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
OUTSIDE DIAMETER: 0.350 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.250 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
RING STYLE: HOOKED
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
USAGE DESIGNEXTERNAL
MATERIAL DIAMETER0.050 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEROUND
OUTSIDE DIAMETER0.350 INCHES NOMINAL IN
INSIDE DIAMETER0.250 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLEHOOKED
MATERIALSTEEL
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 402021?
402021 is a 402021.
What is the NSN for 402021?
402021 is cataloged in the U.S. Government catalog under NSN 5325-00-579-8288. 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.