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91S2-13 — STUD ASSEMBLY,TURNLOCK FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

91S2-13: STUD ASSEMBLY,TURNLOCK FASTENER.

STUD ASSEMBLY,TURNLOCK FASTENER. Key specifications include material: STEEL PIN, drive_type: SLOTTED, stud_diameter: 0.372 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN, stud_head_height: 0.290 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN, surface_treatment: CADMIUM AND CHROMATE OVERALL, width_across_flats: 0.552 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-005-0944, 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
91S2-13
NSN: 5325-00-005-0944
FSC: 5325 — Fastening Devices
CAGE: 71286 — HOWMET GLOBAL FASTENING SYSTEMS INC DIV CAMLOC PRODUCTS (USA)
SPECIFICATIONS
materialSTEEL PIN
drive_typeSLOTTED
stud_diameter0.372 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN
stud_head_height0.290 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
width_across_flats0.552 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN
stud_assembly_styleSTUD ASSEMBLY
extended_washer_diameter0.800 INCHES NOMINAL IN
turnlock_stud_head_styleSTUD HEAD
material_accommodated_thickness0.395 INCHES MINIMUM AND 0.424 INCHES MAXIMUM IN
material_document_and_classificationQQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE PIN
distance_from_engaging_member_to_largest_bearing_surface_of_head0.833 INCHES NOMINAL IN
NSN5325-00-005-0944
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 91S2-13 · 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
•
WIDTH ACROSS FLATS: 0.552 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 0.800 INCHES NOMINAL IN
•
DRIVE TYPE: SLOTTED
•
MATERIAL ACCOMMODATED THICKNESS: 0.395 INCHES MINIMUM AND 0.424 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE PIN
•
STUD HEAD HEIGHT: 0.290 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN
•
DISTANCE FROM ENGAGING MEMBER TO LARGEST BEARING SURFACE OF HEAD: 0.833 INCHES NOMINAL IN
•
TURNLOCK STUD HEAD STYLE: STUD HEAD
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.552 INCHES MINIMUM AND 0.565 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER0.800 INCHES NOMINAL IN
DRIVE TYPESLOTTED
MATERIAL ACCOMMODATED THICKNESS0.395 INCHES MINIMUM AND 0.424 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE PIN
STUD HEAD HEIGHT0.290 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN
DISTANCE FROM ENGAGING MEMBER TO LARGEST BEARING SURFACE OF HEAD0.833 INCHES NOMINAL IN
TURNLOCK STUD HEAD STYLESTUD HEAD
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
MATERIALSTEEL PIN
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
2291738-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 91S2-13?
91S2-13 is a STUD ASSEMBLY,TURNLOCK FASTENER.
What parts can replace 91S2-13?
There is 1 known substitute for 91S2-13: 2291738-2. Substitute compatibility should be verified for your specific system.
What is the NSN for 91S2-13?
91S2-13 is cataloged in the U.S. Government catalog under NSN 5325-00-005-0944. This indicates validated use in U.S. government and defense supply chains.
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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.