PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 57A5A5-4
57A5A5-4 ✓ 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: 0.438 INCHES NOMINAL IN, material: STEEL OVERALL, drive_type: SLOTTED, grip_length: 0.400 INCHES NOMINAL IN, shank_neck_length: 0.080 INCHES NOMINAL IN, surface_treatment: CADMIUM OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-290-6617, 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
57A5A5-4
NSN: 5325-00-290-6617
FSC: 5325
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
diameter0.438 INCHES NOMINAL IN
materialSTEEL OVERALL
drive_typeSLOTTED
grip_length0.400 INCHES NOMINAL IN
shank_neck_length0.080 INCHES NOMINAL IN
surface_treatmentCADMIUM OVERALL
turnlock_stud_head_styleFILLISTER
stud_shank_major_diameter0.250 INCHES NOMINAL IN
turnlock_stud_shank_styleSTUD SHANK
material_accommodated_thickness0.220 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN
NSN5325-00-290-6617
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 57A5A5-4 · 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
•
SHANK NECK LENGTH: 0.080 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
DIAMETER: 0.438 INCHES NOMINAL IN
•
STUD SHANK MAJOR DIAMETER: 0.250 INCHES NOMINAL IN
•
GRIP LENGTH: 0.400 INCHES NOMINAL IN
•
MATERIAL ACCOMMODATED THICKNESS: 0.220 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN
•
TURNLOCK STUD HEAD STYLE: FILLISTER
TECHNICAL CHARACTERISTICS (FLIS)
SHANK NECK LENGTH0.080 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
TURNLOCK STUD SHANK STYLESTUD SHANK
DIAMETER0.438 INCHES NOMINAL IN
STUD SHANK MAJOR DIAMETER0.250 INCHES NOMINAL IN
GRIP LENGTH0.400 INCHES NOMINAL IN
MATERIAL ACCOMMODATED THICKNESS0.220 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN
TURNLOCK STUD HEAD STYLEFILLISTER
SURFACE TREATMENTCADMIUM OVERALL
DRIVE TYPESLOTTED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
2W22959FA56Interchangeable
interchangeable cross-reference
interchangeable
C7621-3Interchangeable
interchangeable cross-reference
interchangeable
38382Interchangeable
interchangeable cross-reference
interchangeable
240-1998-020Interchangeable
interchangeable cross-reference
interchangeable
A440Interchangeable
interchangeable cross-reference
interchangeable
4902-00-4400Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy 57A5A5-4?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 57A5A5-4?
57A5A5-4 is a STUD,TURNLOCK FASTENER.
What parts can replace 57A5A5-4?
There are 11 known substitutes for 57A5A5-4: 2W22959FA56, C7621-3, 38382 and 8 more. Substitute compatibility should be verified for your specific system.
Is 57A5A5-4 still available?
57A5A5-4 is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 57A5A5-4

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026