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74537D-6-28 — BOLT,SHEAR

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

74537D-6-28: BOLT,SHEAR.

The BOLT,SHEAR is a the manufacturer industrial component. Key specifications include head_style: DOUBLE HEXAGON W/HOLE, grip_length: 1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN, head_height: 0.405 INCHES NOMINAL IN, thread_class: 3A A, grip_diameter: 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN, thread_length: 0.707 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-321-6672, 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
74537D-6-28
NSN: 5306-01-321-6672
FSC: 5306 — Bolts
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
head_styleDOUBLE HEXAGON W/HOLE
grip_length1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN
head_height0.405 INCHES NOMINAL IN
thread_class3A A
grip_diameter0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN
thread_length0.707 INCHES NOMINAL IN
fastener_length2.442 INCHES MINIMUM AND 2.472 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
width_between_flats0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
nominal_thread_diameter0.375 INCHES IN
extended_washer_diameter0.715 INCHES MINIMUM AND 0.725 INCHES MAXIMUM IN
NSN5306-01-321-6672
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 74537D-6-28 · 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
•
EXTENDED WASHER THICKNESS: 0.075 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.405 INCHES NOMINAL IN
•
FASTENER LENGTH: 2.442 INCHES MINIMUM AND 2.472 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
EXTENDED WASHER DIAMETER: 0.715 INCHES MINIMUM AND 0.725 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.707 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MP 35N,CAGEC 56878 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.075 INCHES NOMINAL IN
HEAD HEIGHT0.405 INCHES NOMINAL IN
FASTENER LENGTH2.442 INCHES MINIMUM AND 2.472 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
EXTENDED WASHER DIAMETER0.715 INCHES MINIMUM AND 0.725 INCHES MAXIMUM IN
THREAD LENGTH0.707 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMP 35N,CAGEC 56878 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES IN
HEAD STYLEDOUBLE HEXAGON W/HOLE
THREAD DIRECTIONRIGHT-HAND
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 74537D-6-28?
74537D-6-28 is a BOLT,SHEAR.
What is the NSN for 74537D-6-28?
74537D-6-28 is cataloged in the U.S. Government catalog under NSN 5306-01-321-6672. 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.