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3M303A5-11 — STUD,TURNLOCK FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

3M303A5-11: STUD,TURNLOCK FASTENER.

The STUD,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include diameter: 0.4289 INCHES MINIMUM AND 0.4385 INCHES MAXIMUM IN, material: STEEL COMP 8740 OVERALL, drive_type: SOCKET, grip_length: 0.6615 INCHES NOMINAL IN, extension_length: 0.3865 INCHES NOMINAL IN, stud_head_height: 0.194 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-481-1900, 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
3M303A5-11
NSN: 5325-00-481-1900
FSC: 5325 — Fastening Devices
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
diameter0.4289 INCHES MINIMUM AND 0.4385 INCHES MAXIMUM IN
materialSTEEL COMP 8740 OVERALL
drive_typeSOCKET
grip_length0.6615 INCHES NOMINAL IN
extension_length0.3865 INCHES NOMINAL IN
stud_head_height0.194 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
securing_device_typeRING
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_thickness0.687 INCHES NOMINAL IN
NSN5325-00-481-1900
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3M303A5-11 · 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-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
DRIVE TYPE: SOCKET
•
MATERIAL ACCOMMODATED THICKNESS: 0.687 INCHES NOMINAL IN
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
EXTENSION LENGTH: 0.3865 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
DIAMETER: 0.4289 INCHES MINIMUM AND 0.4385 INCHES MAXIMUM IN
•
STUD HEAD HEIGHT: 0.194 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
DRIVE TYPESOCKET
MATERIAL ACCOMMODATED THICKNESS0.687 INCHES NOMINAL IN
TURNLOCK STUD SHANK STYLESTUD SHANK
EXTENSION LENGTH0.3865 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
DIAMETER0.4289 INCHES MINIMUM AND 0.4385 INCHES MAXIMUM IN
STUD HEAD HEIGHT0.194 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN
SECURING DEVICE TYPERING
TURNLOCK STUD HEAD STYLEFLAT FILLISTER
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 5
3M303A5W11Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
M192014-5-11Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
192014-5-11Reference document
Same NSN cross-reference
Reference document — Secondary reference
3M303-5-11Reference document
Same NSN cross-reference
Reference document — Secondary reference
1926-5-11Reference 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 3M303A5-11?
3M303A5-11 is a STUD,TURNLOCK FASTENER.
What parts can replace 3M303A5-11?
There are 5 known substitutes for 3M303A5-11: 3M303A5W11, M192014-5-11, 192014-5-11 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3M303A5-11?
3M303A5-11 is cataloged in the U.S. Government catalog under NSN 5325-00-481-1900. 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.