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Technical Data Sheet
PartsTable / COMPONENT / MS35751-77
MS35751-77 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The BOLT,SQUARE NECK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: BUTTON, neck_width: 0.368 INCHES MINIMUM AND 0.388 INCHES MAXIMUM IN, head_height: 0.188 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN, neck_length: 0.188 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN, head_diameter: 0.782 INCHES MINIMUM AND 0.844 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-993-6257, 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
MS35751-77
NSN: 5306-00-993-6257
FSC: 5306
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleBUTTON
neck_width0.368 INCHES MINIMUM AND 0.388 INCHES MAXIMUM IN
head_height0.188 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN
neck_length0.188 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
head_diameter0.782 INCHES MINIMUM AND 0.844 INCHES MAXIMUM IN
fastener_length2.969 INCHES MINIMUM AND 3.031 INCHES MAXIMUM IN
hardness_rating95.0 ROCKWELL B MAXIMUM OVERALL
surface_treatmentCADMIUM OR ZINC OVERALL
nominal_thread_diameter0.375 INCHES IN
minimum_tensile_strength55000 POUNDS PER SQUARE INCH LBS
material_document_and_classificationSAE GR 1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5306-00-993-6257
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS35751-77 · 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
•
NECK WIDTH: 0.368 INCHES MINIMUM AND 0.388 INCHES MAXIMUM IN
•
HEAD STYLE: BUTTON
•
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
•
NECK LENGTH: 0.188 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
•
HEAD HEIGHT: 0.188 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.969 INCHES MINIMUM AND 3.031 INCHES MAXIMUM IN
•
HARDNESS RATING: 95.0 ROCKWELL B MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NECK WIDTH0.368 INCHES MINIMUM AND 0.388 INCHES MAXIMUM IN
HEAD STYLEBUTTON
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
NECK LENGTH0.188 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
HEAD HEIGHT0.188 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN
FASTENER LENGTH2.969 INCHES MINIMUM AND 3.031 INCHES MAXIMUM IN
HARDNESS RATING95.0 ROCKWELL B MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE GR 1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MINIMUM TENSILE STRENGTH55000 POUNDS PER SQUARE INCH LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
FFB571TYPEC2CLASSCInterchangeable
interchangeable cross-reference
interchangeable
FFB571Interchangeable
interchangeable cross-reference
interchangeable
67846A1-13-4Interchangeable
interchangeable cross-reference
interchangeable
109118Interchangeable
interchangeable cross-reference
interchangeable
109129Interchangeable
interchangeable cross-reference
interchangeable
11449489Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS35751-77?
MS35751-77 is a BOLT,SQUARE NECK.
What parts can replace MS35751-77?
There are 7 known substitutes for MS35751-77: FFB571TYPEC2CLASSC, FFB571, 67846A1-13-4 and 4 more. Substitute compatibility should be verified for your specific system.
Is MS35751-77 still available?
MS35751-77 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026