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Technical Data Sheet
PartsTable / COMPONENT / MS35308-556
MS35308-556 ✓ 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 SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, head_height: 0.658 INCHES MINIMUM AND 0.718 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 2.708 INCHES MINIMUM IN, surface_finish: 63.0 MICROINCHES THREADS, fastener_length: 3.312 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-007-6064, 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
MS35308-556
NSN: 5305-00-007-6064
FSC: 5305
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
head_styleHEXAGON
head_height0.658 INCHES MINIMUM AND 0.718 INCHES MAXIMUM IN
thread_class2A A
thread_length2.708 INCHES MINIMUM IN
surface_finish63.0 MICROINCHES THREADS
fastener_length3.312 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN
hardness_rating74.0 ROCKWELL B MINIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_between_flats1.631 INCHES MINIMUM AND 1.688 INCHES MAXIMUM IN
nominal_thread_diameter1.125 INCHES IN
minimum_tensile_strength70000 POUNDS PER SQUARE INCH LBS
NSN5305-00-007-6064
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS35308-556 · 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
•
NOMINAL THREAD DIAMETER: 1.125 INCHES IN
•
THREAD LENGTH: 2.708 INCHES MINIMUM IN
•
WIDTH BETWEEN FLATS: 1.631 INCHES MINIMUM AND 1.688 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 303F OR STEEL COMP 385 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 308 OR STEEL COMP 309 OR STEEL COMP 309S OR STEEL COMP 310 OR STEEL COMP 310S OR STEEL COMP 314 OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 323 OR STEEL COMP 324 OR STEEL COMP 347 OR STEEL COMP 348 OVERALL
•
HARDNESS RATING: 74.0 ROCKWELL B MINIMUM OVERALL
•
SURFACE FINISH: 63.0 MICROINCHES THREADS
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 10P STYLE
•
THREAD QUANTITY PER INCH: 12
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD DIAMETER1.125 INCHES IN
THREAD LENGTH2.708 INCHES MINIMUM IN
WIDTH BETWEEN FLATS1.631 INCHES MINIMUM AND 1.688 INCHES MAXIMUM IN
MATERIALSTEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 303F OR STEEL COMP 385 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 308 OR STEEL COMP 309 OR STEEL COMP 309S OR STEEL COMP 310 OR STEEL COMP 310S OR STEEL COMP 314 OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 323 OR STEEL COMP 324 OR STEEL COMP 347 OR STEEL COMP 348 OVERALL
HARDNESS RATING74.0 ROCKWELL B MINIMUM OVERALL
SURFACE FINISH63.0 MICROINCHES THREADS
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 10P STYLE
THREAD QUANTITY PER INCH12
THREAD SERIES DESIGNATORUNF
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
NASM35308Interchangeable
Same NIIN cross-reference
interchangeable
FF-S-85Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS35308-556?
MS35308-556 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace MS35308-556?
There are 2 known substitutes for MS35308-556: NASM35308, FF-S-85. Substitute compatibility should be verified for your specific system.
What is the NSN for MS35308-556?
MS35308-556 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-007-6064. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026