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12880-899-1 — STUD,TURNLOCK FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

12880-899-1: STUD,TURNLOCK FASTENER.

The STUD,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include diameter: 0.550 INCHES MINIMUM IN, material: STEEL OVERALL, drive_type: CROSS RECESS, grip_length: 0.750 INCHES NOMINAL IN, surface_treatment: CADMIUM AND CHROMATE OVERALL, securing_device_type: WASHER. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-474-5238, 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
12880-899-1
NSN: 5325-00-474-5238
FSC: 5325 — Fastening Devices
CAGE: 94756 — THE BOEING COMPANY DIV LEGACY BOEING HB1 (USA)
SPECIFICATIONS
diameter0.550 INCHES MINIMUM IN
materialSTEEL OVERALL
drive_typeCROSS RECESS
grip_length0.750 INCHES NOMINAL IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
securing_device_typeWASHER
turnlock_stud_head_styleFLAT COUNTERSUNK
stud_shank_major_diameter0.305 INCHES MAXIMUM IN
turnlock_stud_shank_styleSTUD SHANK
material_accommodated_thickness0.391 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
surface_treatment_document_and_classificationQQ-P-416,CL 2,TY 2 FED SPEC ALL TREATMENT RESPONSES OVERALL
NSN5325-00-474-5238
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 12880-899-1 · 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,CL 2,TY 2 FED SPEC ALL TREATMENT RESPONSES OVERALL
•
DRIVE TYPE: CROSS RECESS
•
MATERIAL ACCOMMODATED THICKNESS: 0.391 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
DIAMETER: 0.550 INCHES MINIMUM IN
•
SECURING DEVICE TYPE: WASHER
•
TURNLOCK STUD HEAD STYLE: FLAT COUNTERSUNK
•
STUD SHANK MAJOR DIAMETER: 0.305 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,CL 2,TY 2 FED SPEC ALL TREATMENT RESPONSES OVERALL
DRIVE TYPECROSS RECESS
MATERIAL ACCOMMODATED THICKNESS0.391 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
TURNLOCK STUD SHANK STYLESTUD SHANK
DIAMETER0.550 INCHES MINIMUM IN
SECURING DEVICE TYPEWASHER
TURNLOCK STUD HEAD STYLEFLAT COUNTERSUNK
STUD SHANK MAJOR DIAMETER0.305 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 1
S7300F1-43Reference 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 12880-899-1?
12880-899-1 is a STUD,TURNLOCK FASTENER.
What parts can replace 12880-899-1?
There is 1 known substitute for 12880-899-1: S7300F1-43. Substitute compatibility should be verified for your specific system.
What is the NSN for 12880-899-1?
12880-899-1 is cataloged in the U.S. Government catalog under NSN 5325-00-474-5238. 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.