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MS51957-25 — Technical Data Sheet

✓ 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,MACHINE is a the manufacturer industrial component. Key specifications include head_style: PAN, head_height: 0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN, thread_length: 0.095 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN, fastener_length: 0.157 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System under NSN 5305-00-054-6649, 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
MS51957-25
NSN: 5305-00-054-6649
FSC: 5305
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
head_stylePAN
head_height0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
thread_length0.095 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
fastener_length0.157 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
locking_featurePATCH THREADS
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.138 INCHES IN
minimum_tensile_strength80000 POUNDS PER SQUARE INCH LBS
NSN5305-00-054-6649
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS51957-25 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
091925InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
0453-218InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
FS1024InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MDL9R0WS18FTInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
C-18830-P1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
BACS12Y6C3InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51957-25?
MS51957-25 is a SCREW,MACHINE.
What parts can replace MS51957-25?
There are 29 known substitutes for MS51957-25: 091925, 0453-218, FS1024 and 26 more. Substitute compatibility should be verified for your specific system.
Is MS51957-25 still available?
MS51957-25 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: October 2026