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3M303A5W-3 — STUD,TURNLOCK FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

3M303A5W-3: STUD,TURNLOCK FASTENER.

The STUD,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include diameter: 0.400 INCHES MINIMUM IN, material: STEEL COMP 8740 OVERALL, drive_type: SOCKET, grip_length: 0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN, extension_length: 0.361 INCHES NOMINAL IN, special_features: FURNISHED W/ AN INTEGRAL WEB IN SOEKET HEAD. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-952-1038, 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
3M303A5W-3
NSN: 5325-00-952-1038
NIINs: 009521038, 010889606
FSC: 5325 — Fastening Devices
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
diameter0.400 INCHES MINIMUM IN
materialSTEEL COMP 8740 OVERALL
drive_typeSOCKET
grip_length0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
extension_length0.361 INCHES NOMINAL IN
special_featuresFURNISHED W/ AN INTEGRAL WEB IN SOEKET HEAD
surface_treatmentCADMIUM AND CHROMATE OVERALL
securing_device_typeRING
turnlock_stud_head_styleFLAT COUNTERSUNK
stud_shank_major_diameter0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
turnlock_stud_shank_styleSTUD SHANK
material_accommodated_thickness0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
NSN5325-00-952-1038
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3M303A5W-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
•
DRIVE TYPE: SOCKET
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
EXTENSION LENGTH: 0.4458 INCHES NOMINAL IN
•
DIAMETER: 0.4289 INCHES MINIMUM AND 0.4385 INCHES MAXIMUM IN
•
STUD HEAD HEIGHT: 0.023 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
•
SECURING DEVICE TYPE: RING
•
TURNLOCK STUD HEAD STYLE: FLAT FILLISTER
•
STUD SHANK MAJOR DIAMETER: 0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
DRIVE TYPESOCKET
TURNLOCK STUD SHANK STYLESTUD SHANK
EXTENSION LENGTH0.4458 INCHES NOMINAL IN
DIAMETER0.4289 INCHES MINIMUM AND 0.4385 INCHES MAXIMUM IN
STUD HEAD HEIGHT0.023 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
SECURING DEVICE TYPERING
TURNLOCK STUD HEAD STYLEFLAT FILLISTER
STUD SHANK MAJOR DIAMETER0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 2
1926-5-3Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
3M303-5-3Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3M303A5W-3?
3M303A5W-3 is a STUD,TURNLOCK FASTENER.
What parts can replace 3M303A5W-3?
There are 2 known substitutes for 3M303A5W-3: 1926-5-3, 3M303-5-3. Substitute compatibility should be verified for your specific system.
What is the NSN for 3M303A5W-3?
3M303A5W-3 is cataloged in the U.S. Government catalog under NSN 5325-00-952-1038. 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.