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MS51959-45B — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

MS51959-45B: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT COUNTERSUNK, thread_class: 2A A, head_diameter: 0.292 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN, thread_length: 0.438 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN, screw_material: STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316, fastener_length: 0.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-455-2633, 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
MS51959-45B
NSN: 5305-00-455-2633
NIINs: 004552633, 007640068
FSC: 5305 — Screws
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
head_styleFLAT COUNTERSUNK
thread_class2A A
head_diameter0.292 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN
thread_length0.438 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
screw_materialSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316
fastener_length0.500 INCHES NOMINAL IN
thread_directionRIGHT-HAND
countersink_angle80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
internal_drive_styleCROSS RECESS TYPE 1
end_item_identificationMRAP - M-ATV W/CS13 POP AND SNE
nominal_thread_diameter0.164 INCHES IN
screw_surface_treatmentPASSIVATE
NSN5305-00-455-2633
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS51959-45B · 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
•
SCREW SURFACE TREATMENT: OXIDE
•
FASTENER LENGTH: 0.469 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582 ASSN STD 1ST MATERIAL RESPONSE OR FED STD NO. 66 FED STD 2ND MATERIAL RESPONSE OR 16-18 ASSN STD 3RD MATERIAL RESPONSE OR 18-8 ASSN STD 4TH MATERIAL RESPONSE
•
THREAD LENGTH: 0.307 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK
•
THREAD DIRECTION: RIGHT-HAND
•
NONDEFINITIVE SPEC/STD DATA: 3 TYPE AND 2C STYLE
TECHNICAL CHARACTERISTICS
SCREW SURFACE TREATMENTOXIDE
FASTENER LENGTH0.469 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD 1ST MATERIAL RESPONSE OR FED STD NO. 66 FED STD 2ND MATERIAL RESPONSE OR 16-18 ASSN STD 3RD MATERIAL RESPONSE OR 18-8 ASSN STD 4TH MATERIAL RESPONSE
THREAD LENGTH0.307 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.164 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
NONDEFINITIVE SPEC/STD DATA3 TYPE AND 2C STYLE
SCREW MATERIALSTEEL CORROSION RESISTING
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
SUBSTITUTES & CROSS-REFERENCES 2
10241-45Reference document
Same NSN cross-reference
Reference document — Secondary reference
FFS92Reference document
Same NSN cross-reference
Reference document — Identification reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS51959-45B?
MS51959-45B is a SCREW,MACHINE.
What parts can replace MS51959-45B?
There are 2 known substitutes for MS51959-45B: 10241-45, FFS92. Substitute compatibility should be verified for your specific system.
What is the NSN for MS51959-45B?
MS51959-45B is cataloged in the U.S. Government catalog under NSN 5305-00-455-2633. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.