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Technical Data Sheet
PartsTable / COMPONENT / MS90728-51
MS90728-51 ✓ 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,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 0.875 INCHES MINIMUM AND 1.062 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES THREADS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-226-4844, 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
MS90728-51
NSN: 5306-00-226-4844
FSC: 5306
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
thread_class2A A
thread_length0.875 INCHES MINIMUM AND 1.062 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES THREADS
fastener_length4.656 INCHES MINIMUM AND 4.750 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
surface_treatmentZINC AND CHROMATE OVERALL
width_between_flats0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
nominal_thread_diameter0.312 INCHES IN
NSN5306-00-226-4844
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS90728-51 · 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
•
HEAD STYLE: HEXAGON
•
MINIMUM TENSILE STRENGTH: 150000 POUNDS PER SQUARE INCH LBS
•
WIDTH BETWEEN FLATS: 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
THREAD QUANTITY PER INCH: 18
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
FASTENER LENGTH: 4.656 INCHES MINIMUM AND 4.750 INCHES MAXIMUM IN
•
SURFACE TREATMENT: ZINC AND CHROMATE OVERALL
•
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS (FLIS)
HEAD STYLEHEXAGON
MINIMUM TENSILE STRENGTH150000 POUNDS PER SQUARE INCH LBS
WIDTH BETWEEN FLATS0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH18
NOMINAL THREAD DIAMETER0.312 INCHES IN
FASTENER LENGTH4.656 INCHES MINIMUM AND 4.750 INCHES MAXIMUM IN
SURFACE TREATMENTZINC AND CHROMATE OVERALL
THREAD CLASS2A A
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
IR7315CInterchangeable
interchangeable cross-reference
interchangeable
A2251Interchangeable
interchangeable cross-reference
interchangeable
711273Interchangeable
interchangeable cross-reference
interchangeable
125178Interchangeable
interchangeable cross-reference
interchangeable
33-224Interchangeable
interchangeable cross-reference
interchangeable
800-A1C1E2J10L2N1(W)13 EMER,OFFInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS90728-51?
MS90728-51 is a BOLT,MACHINE.
What parts can replace MS90728-51?
There are 6 known substitutes for MS90728-51: IR7315C, A2251, 711273 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS90728-51?
MS90728-51 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-226-4844. 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