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Technical Data Sheet
PartsTable / COMPONENT / MS51957-30
MS51957-30 ✓ 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: 0.429 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN, screw_material: STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-054-6654, 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
MS51957-30
NSN: 5305-00-054-6654
FSC: 5305
CAGE: 63020 — CRESCENT MANUFACTURING OPERATING COMPANY (USA)
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_length0.429 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
screw_materialSTEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305
fastener_length0.429 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
internal_drive_styleCROSS RECESS TYPE III
nominal_thread_diameter0.138 INCHES IN
screw_surface_treatmentPASSIVATE
thread_quantity_per_inch32
NSN5305-00-054-6654
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS51957-30 · 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 23
203-21207-47Interchangeable
interchangeable cross-reference
interchangeable
10204811Interchangeable
interchangeable cross-reference
interchangeable
23046Interchangeable
interchangeable cross-reference
interchangeable
A38HYTInterchangeable
interchangeable cross-reference
interchangeable
A38Interchangeable
interchangeable cross-reference
interchangeable
6C605Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51957-30?
MS51957-30 is a SCREW,MACHINE.
What parts can replace MS51957-30?
There are 23 known substitutes for MS51957-30: 203-21207-47, 10204811, 23046 and 20 more. Substitute compatibility should be verified for your specific system.
Is MS51957-30 still available?
MS51957-30 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