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Technical Data Sheet
PartsTable / COMPONENT / C392-5-3
C392-5-3 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The STUD,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include diameter: 0.400 INCHES NOMINAL IN, material: STEEL COMP 8740 OVERALL, drive_type: SOCKET, grip_length: 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN, minor_diameter: 0.272 INCHES NOMINAL IN, extension_length: 0.361 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-930-3284, 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
C392-5-3
NSN: 5325-00-930-3284
FSC: 5325
CAGE: 81755 — LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN AERONAUTICS COMPANY (USA)
SPECIFICATIONS
diameter0.400 INCHES NOMINAL IN
materialSTEEL COMP 8740 OVERALL
drive_typeSOCKET
grip_length0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN
minor_diameter0.272 INCHES NOMINAL IN
extension_length0.361 INCHES NOMINAL IN
stud_head_height0.023 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
turnlock_stud_head_styleFLAT FILLISTER
stud_shank_major_diameter0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
turnlock_stud_shank_styleSTUD SHANK
material_accommodated_thickness0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN
NSN5325-00-930-3284
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: C392-5-3 · 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
•
STUD HEAD HEIGHT: 0.023 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP 8740 OVERALL
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
STUD SHANK MAJOR DIAMETER: 0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
•
DIAMETER: 0.400 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
STUD HEAD HEIGHT0.023 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 8740 OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
TURNLOCK STUD SHANK STYLESTUD SHANK
STUD SHANK MAJOR DIAMETER0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
DIAMETER0.400 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
TURNLOCK STUD HEAD STYLEFLAT FILLISTER
GRIP LENGTH0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
61101Interchangeable
interchangeable cross-reference
interchangeable
192053Interchangeable
interchangeable cross-reference
interchangeable
100-0819Interchangeable
interchangeable cross-reference
interchangeable
A15448Interchangeable
interchangeable cross-reference
interchangeable
PAF20-5-3Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C392-5-3?
C392-5-3 is a STUD,TURNLOCK FASTENER.
What parts can replace C392-5-3?
There are 5 known substitutes for C392-5-3: 61101, 192053, 100-0819 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C392-5-3?
C392-5-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-930-3284. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026