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PartsTable / COMPONENT / MS51028-51
MS51028-51 ✓ 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 SETSCREW is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEADLESS (SETSCREW), point_style: FLAT, thread_class: 3A A, thread_length: 0.375 INCHES MAXIMUM IN, fastener_length: 0.375 INCHES NOMINAL 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 5305-00-408-0044, 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
MS51028-51
NSN: 5305-00-408-0044
FSC: 5305
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEADLESS (SETSCREW)
point_styleFLAT
thread_class3A A
thread_length0.375 INCHES MAXIMUM IN
fastener_length0.375 INCHES NOMINAL IN
hardness_rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentPHOSPHATE OVERALL
width_across_flats0.093 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
internal_drive_styleHEXAGON
nominal_thread_diameter0.190 INCHES IN
NSN5305-00-408-0044
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS51028-51 · 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: HEADLESS (SETSCREW)
•
FASTENER LENGTH: 0.375 INCHES NOMINAL IN
•
THREAD SERIES DESIGNATOR: UNF
•
NONDEFINITIVE SPEC/STD DATA: 3 TYPE AND 11 STYLE
•
SURFACE TREATMENT: PHOSPHATE OVERALL
•
MATERIAL: STEEL OVERALL
•
THREAD CLASS: 3A A
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
HEAD STYLEHEADLESS (SETSCREW)
FASTENER LENGTH0.375 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNF
NONDEFINITIVE SPEC/STD DATA3 TYPE AND 11 STYLE
SURFACE TREATMENTPHOSPHATE OVERALL
MATERIALSTEEL OVERALL
THREAD CLASS3A A
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
THREAD LENGTH0.375 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH32
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
209905Interchangeable
interchangeable cross-reference
interchangeable
3982Interchangeable
interchangeable cross-reference
interchangeable
10224Interchangeable
interchangeable cross-reference
interchangeable
110S 51/64Interchangeable
interchangeable cross-reference
interchangeable
GGG-D-751Interchangeable
interchangeable cross-reference
interchangeable
T-100-SMInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51028-51?
MS51028-51 is a SETSCREW.
What parts can replace MS51028-51?
There are 16 known substitutes for MS51028-51: 209905, 3982, 10224 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS51028-51?
MS51028-51 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-408-0044. 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