PartsTable
Technical Data Sheet
MS51959-50 ✓ 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: FLAT COUNTERSUNK, thread_class: 2A A, head_diameter: 0.306 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN, thread_length: 1.150 INCHES NOMINAL IN, screw_material: STEEL CORROSION RESISTING, fastener_length: 1.250 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-723-9423, 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
MS51959-50
NSN: 5305-00-723-9423
FSC: 5305
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_diameter0.306 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN
thread_length1.150 INCHES NOMINAL IN
screw_materialSTEEL CORROSION RESISTING
fastener_length1.250 INCHES NOMINAL IN
thread_directionRIGHT-HAND
countersink_angle80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
internal_drive_styleCROSS RECESS TYPE II
nominal_thread_diameter0.138 INCHES IN
thread_quantity_per_inch32
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-00-723-9423
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS51959-50 · 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
THREAD LENGTH: 1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
THREAD CLASS: 2A A
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
COUNTERSINK ANGLE: 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
SCREW MATERIAL: STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316
SCREW SURFACE TREATMENT: PASSIVATE
TECHNICAL CHARACTERISTICS (FLIS)
THREAD LENGTH1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
THREAD CLASS2A A
NOMINAL THREAD DIAMETER0.164 INCHES IN
COUNTERSINK ANGLE80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SCREW MATERIALSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316
END ITEM IDENTIFICATIONARMORED MULTI-PURPOSE VEHICLE (AMPV)
SCREW SURFACE TREATMENTPASSIVATE
MINIMUM TENSILE STRENGTH80000 POUNDS PER SQUARE INCH LBS
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
22272Interchangeable
interchangeable cross-reference
interchangeable
14233Interchangeable
interchangeable cross-reference
interchangeable
342-0085-000Interchangeable
interchangeable cross-reference
interchangeable
965812-318CInterchangeable
interchangeable cross-reference
interchangeable
9135-318Interchangeable
interchangeable cross-reference
interchangeable
72FL1-4X1-8Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51959-50?
MS51959-50 is a SCREW,MACHINE.
What parts can replace MS51959-50?
There are 11 known substitutes for MS51959-50: 22272, 14233, 342-0085-000 and 8 more. Substitute compatibility should be verified for your specific system.
Is MS51959-50 still available?
MS51959-50 is currently cancelled.
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