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7591031P4 — STUD,TURNLOCK FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

7591031P4: STUD,TURNLOCK FASTENER.

The STUD,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include diameter: 0.357 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN, material: STEEL CORROSION RESISTING STUD, drive_type: SOCKET, grip_length: 0.291 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN, minor_diameter: 0.221 INCHES NOMINAL IN, extension_length: 0.195 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-058-4376, 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
7591031P4
NSN: 5325-01-058-4376
FSC: 5325 — Fastening Devices
CAGE: 99971 — LOCKHEED MARTIN CORP NAVAL ELECTRONICS & SURVEILLANCE SYSTEMS (USA)
SPECIFICATIONS
diameter0.357 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN
materialSTEEL CORROSION RESISTING STUD
drive_typeSOCKET
grip_length0.291 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN
minor_diameter0.221 INCHES NOMINAL IN
extension_length0.195 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
special_featuresSLOT IN STUD HEAD 0.035 IN. W TO 0.065 IN. W IN
surface_treatmentANODIZE RECEPTACLE
securing_device_typeRING
turnlock_stud_head_styleFILLISTER
stud_shank_major_diameter0.247 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN
turnlock_stud_shank_styleSTUD SHANK
NSN5325-01-058-4376
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 7591031P4 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STUD
•
DRIVE TYPE: SOCKET
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
EXTENSION LENGTH: 0.195 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
•
DIAMETER: 0.357 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN
•
SECURING DEVICE TYPE: RING
•
TURNLOCK STUD HEAD STYLE: FILLISTER
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE STUD
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE RECEPTACLE
DRIVE TYPESOCKET
TURNLOCK STUD SHANK STYLESTUD SHANK
EXTENSION LENGTH0.195 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
DIAMETER0.357 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN
SECURING DEVICE TYPERING
TURNLOCK STUD HEAD STYLEFILLISTER
STUD SHANK MAJOR DIAMETER0.247 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN
SPECIAL FEATURESSLOT IN STUD HEAD 0.035 IN. W TO 0.065 IN. W IN
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 3
CA18161-3HSReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
CA18161-3-Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
7591031P0004Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7591031P4?
7591031P4 is a STUD,TURNLOCK FASTENER.
What parts can replace 7591031P4?
There are 3 known substitutes for 7591031P4: CA18161-3HS, CA18161-3-, 7591031P0004. Substitute compatibility should be verified for your specific system.
What is the NSN for 7591031P4?
7591031P4 is cataloged in the U.S. Government catalog under NSN 5325-01-058-4376. 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.