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128-0120-001 — STUD,TURNLOCK FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

128-0120-001: STUD,TURNLOCK FASTENER.

The STUD,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include diameter: 0.312 INCHES NOMINAL IN, material: STEEL OVERALL, drive_type: SLOTTED, grip_length: 0.247 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN, extension_length: 0.188 INCHES NOMINAL IN, stud_head_height: 0.438 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-925-0639, 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
128-0120-001
NSN: 5325-00-925-0639
FSC: 5325 — Fastening Devices
CAGE: 94756 — THE BOEING COMPANY DIV LEGACY BOEING HB1 (USA)
SPECIFICATIONS
diameter0.312 INCHES NOMINAL IN
materialSTEEL OVERALL
drive_typeSLOTTED
grip_length0.247 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN
extension_length0.188 INCHES NOMINAL IN
stud_head_height0.438 INCHES NOMINAL IN
surface_treatmentPASSIVATE OVERALL
securing_device_typeRING
turnlock_stud_head_styleKNURLED
stud_shank_major_diameter0.247 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN
turnlock_stud_shank_styleSTUD SHANK
material_accommodated_thickness0.156 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
NSN5325-00-925-0639
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 128-0120-001 · 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: SLOTTED
•
MATERIAL ACCOMMODATED THICKNESS: 0.156 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
EXTENSION LENGTH: 0.188 INCHES NOMINAL IN
•
DIAMETER: 0.312 INCHES NOMINAL IN
•
STUD HEAD HEIGHT: 0.438 INCHES NOMINAL IN
•
SECURING DEVICE TYPE: RING
•
TURNLOCK STUD HEAD STYLE: KNURLED
TECHNICAL CHARACTERISTICS
DRIVE TYPESLOTTED
MATERIAL ACCOMMODATED THICKNESS0.156 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
TURNLOCK STUD SHANK STYLESTUD SHANK
EXTENSION LENGTH0.188 INCHES NOMINAL IN
DIAMETER0.312 INCHES NOMINAL IN
STUD HEAD HEIGHT0.438 INCHES NOMINAL IN
SECURING DEVICE TYPERING
TURNLOCK STUD HEAD STYLEKNURLED
STUD SHANK MAJOR DIAMETER0.247 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE 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 6
10071868-101Reference document
Same NSN cross-reference
Reference document — Secondary reference
11437568-2Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
2887878-2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
CA1828-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
GS522H1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
FT5029-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 128-0120-001?
128-0120-001 is a STUD,TURNLOCK FASTENER.
What parts can replace 128-0120-001?
There are 6 known substitutes for 128-0120-001: 10071868-101, 11437568-2, 2887878-2 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 128-0120-001?
128-0120-001 is cataloged in the U.S. Government catalog under NSN 5325-00-925-0639. 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.