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12356904 — STUD,TURNLOCK FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

12356904: STUD,TURNLOCK FASTENER.

The STUD,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include diameter: 0.620 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN, material: STEEL OVERALL, grip_length: 0.620 INCHES NOMINAL IN, shank_neck_length: 0.430 INCHES NOMINAL IN, surface_treatment: CADMIUM AND CHROMATE OVERALL, turnlock_stud_head_style: FILLISTER. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-281-5057, 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
12356904
NSN: 5325-00-281-5057
FSC: 5325 — Fastening Devices
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
diameter0.620 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
materialSTEEL OVERALL
grip_length0.620 INCHES NOMINAL IN
shank_neck_length0.430 INCHES NOMINAL IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
turnlock_stud_head_styleFILLISTER
stud_shank_major_diameter0.369 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN
turnlock_stud_shank_styleSTUD SHANK
nondefinitive_spec/std_data2 TYPE AND 1 STYLE AND A CLASS AND B CLASS AND 7 SIZE
material_accommodated_thickness0.231 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
surface_treatment_document_and_classificationQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5325-00-281-5057
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 12356904 · 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 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL ACCOMMODATED THICKNESS: 0.231 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
DIAMETER: 0.620 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
•
SHANK NECK LENGTH: 0.430 INCHES NOMINAL IN
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 1 STYLE AND A CLASS AND B CLASS AND 7 SIZE
•
TURNLOCK STUD HEAD STYLE: FILLISTER
•
STUD SHANK MAJOR DIAMETER: 0.369 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL ACCOMMODATED THICKNESS0.231 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
TURNLOCK STUD SHANK STYLESTUD SHANK
DIAMETER0.620 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
SHANK NECK LENGTH0.430 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 1 STYLE AND A CLASS AND B CLASS AND 7 SIZE
TURNLOCK STUD HEAD STYLEFILLISTER
STUD SHANK MAJOR DIAMETER0.369 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
MATERIALSTEEL OVERALL
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 2
A6T26IYReference document
Same NSN cross-reference
Reference document — Secondary reference
A6T26Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12356904?
12356904 is a STUD,TURNLOCK FASTENER.
What parts can replace 12356904?
There are 2 known substitutes for 12356904: A6T26IY, A6T26. Substitute compatibility should be verified for your specific system.
What is the NSN for 12356904?
12356904 is cataloged in the U.S. Government catalog under NSN 5325-00-281-5057. 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.