12-740-00-020 — STUD ASSEMBLY,TURNLOCK FASTENER

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

12-740-00-020: STUD ASSEMBLY,TURNLOCK FASTENER.

STUD ASSEMBLY,TURNLOCK FASTENER. Key specifications include diameter: 0.302 INCHES NOMINAL IN, material: STEEL OVERALL, drive_type: SLOTTED, stud_diameter: 0.124 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN, stud_head_height: 0.092 INCHES NOMINAL IN, surface_treatment: CADMIUM AND CHROMATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-171-9219, 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

12-740-00-020

NSN: 5325-00-171-9219
FSC: 5325 — Fastening Devices
CAGE: 78022 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)

SPECIFICATIONS

diameter	0.302 INCHES NOMINAL IN
material	STEEL OVERALL
drive_type	SLOTTED
stud_diameter	0.124 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
stud_head_height	0.092 INCHES NOMINAL IN
surface_treatment	CADMIUM AND CHROMATE OVERALL
stud_assembly_style	STUD ASSEMBLY
securing_device_type	WASHER
eyelet_outside_diameter	0.519 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
turnlock_stud_head_style	FLAT FILLISTER
material_accommodated_thickness	0.120 INCHES MINIMUM AND 0.149 INCHES MAXIMUM IN
distance_from_engaging_member_to_largest_bearing_surface_of_head	0.341 INCHES MINIMUM AND 0.351 INCHES MAXIMUM IN
NSN	5325-00-171-9219

COMPONENT DIAGRAM

KEY FEATURES

•

EYELET OUTSIDE DIAMETER: 0.519 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN

•

DRIVE TYPE: SLOTTED

•

MATERIAL ACCOMMODATED THICKNESS: 0.120 INCHES MINIMUM AND 0.149 INCHES MAXIMUM IN

•

DIAMETER: 0.302 INCHES NOMINAL IN

•

STUD HEAD HEIGHT: 0.092 INCHES NOMINAL IN

•

SECURING DEVICE TYPE: WASHER

•

DISTANCE FROM ENGAGING MEMBER TO LARGEST BEARING SURFACE OF HEAD: 0.341 INCHES MINIMUM AND 0.351 INCHES MAXIMUM IN

•

TURNLOCK STUD HEAD STYLE: FLAT FILLISTER

TECHNICAL CHARACTERISTICS

EYELET OUTSIDE DIAMETER	0.519 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
DRIVE TYPE	SLOTTED
MATERIAL ACCOMMODATED THICKNESS	0.120 INCHES MINIMUM AND 0.149 INCHES MAXIMUM IN
DIAMETER	0.302 INCHES NOMINAL IN
STUD HEAD HEIGHT	0.092 INCHES NOMINAL IN
SECURING DEVICE TYPE	WASHER
DISTANCE FROM ENGAGING MEMBER TO LARGEST BEARING SURFACE OF HEAD	0.341 INCHES MINIMUM AND 0.351 INCHES MAXIMUM IN
TURNLOCK STUD HEAD STYLE	FLAT FILLISTER
SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
MATERIAL	STEEL OVERALL

SUBSTITUTES & CROSS-REFERENCES 3

28S1-4Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

58A122C833-2Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

10033226-3Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 12-740-00-020?

12-740-00-020 is a STUD ASSEMBLY,TURNLOCK FASTENER.

What parts can replace 12-740-00-020?

There are 3 known substitutes for 12-740-00-020: 28S1-4, 58A122C833-2, 10033226-3. Substitute compatibility should be verified for your specific system.

What is the NSN for 12-740-00-020?

12-740-00-020 is cataloged in the U.S. Government catalog under NSN 5325-00-171-9219. This indicates validated use in U.S. government and defense supply chains.

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12-740-00-020 — STUD ASSEMBLY,TURNLOCK FASTENER

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