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40003388 — STUD,TURNLOCK FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

40003388: STUD,TURNLOCK FASTENER.

The STUD,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include head_length: 0.375 INCHES NOMINAL IN, extension_length: 0.630 INCHES NOMINAL IN, special_features: MAT: STAINLESS STEEL, stud_head_height: 0.175 INCHES NOMINAL IN, turnlock_stud_head_style: LOOP ON BELL, part_name_assigned_by_controlling_agency: BAIL AND STUD. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-615-5021, 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
40003388
NSN: 5325-01-615-5021
FSC: 5325 — Fastening Devices
CAGE: U0EX2 — GENERAL DYNAMICS LAND SYSTEMS -FORCE PROTECTION EUROPE (GBR)
SPECIFICATIONS
head_length0.375 INCHES NOMINAL IN
extension_length0.630 INCHES NOMINAL IN
special_featuresMAT: STAINLESS STEEL
stud_head_height0.175 INCHES NOMINAL IN
turnlock_stud_head_styleLOOP ON BELL
part_name_assigned_by_controlling_agencyBAIL AND STUD
NSN5325-01-615-5021
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 40003388 · 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
•
HEAD LENGTH: 0.375 INCHES NOMINAL IN
•
EXTENSION LENGTH: 0.630 INCHES NOMINAL IN
•
STUD HEAD HEIGHT: 0.175 INCHES NOMINAL IN
•
TURNLOCK STUD HEAD STYLE: LOOP ON BELL
TECHNICAL CHARACTERISTICS
HEAD LENGTH0.375 INCHES NOMINAL IN
EXTENSION LENGTH0.630 INCHES NOMINAL IN
STUD HEAD HEIGHT0.175 INCHES NOMINAL IN
TURNLOCK STUD HEAD STYLELOOP ON BELL
SPECIAL FEATURESMAT: STAINLESS STEEL
PART NAME ASSIGNED BY CONTROLLING AGENCYBAIL AND STUD
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 40003388?
40003388 is a STUD,TURNLOCK FASTENER.
What is the NSN for 40003388?
40003388 is cataloged in the U.S. Government catalog under NSN 5325-01-615-5021. 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.