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PartsTable / COMPONENT / MS51959-27S316
MS51959-27S316 ✓ 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: 0.257 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN, thread_length: 0.167 INCHES NOMINAL IN, screw_material: STEEL COMP 316, fastener_length: 0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM 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 5305-01-424-3571, 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
MS51959-27S316
NSN: 5305-01-424-3571
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_diameter0.257 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN
thread_length0.167 INCHES NOMINAL IN
screw_materialSTEEL COMP 316
fastener_length0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
special_featuresCRES COMP 316 ONLY
thread_directionLEFT-HAND
countersink_angle80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.138 INCHES IN
screw_surface_treatmentPASSIVATE
NSN5305-01-424-3571
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS51959-27S316 · 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 DIAMETER: 0.257 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN
•
THREAD CLASS: 2A A
•
SCREW MATERIAL: STEEL COMP 316
•
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
•
THREAD QUANTITY PER INCH: 32
•
FASTENER LENGTH: 0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
•
HEAD STYLE: FLAT COUNTERSUNK
•
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
HEAD DIAMETER0.257 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN
THREAD CLASS2A A
SCREW MATERIALSTEEL COMP 316
NOMINAL THREAD DIAMETER0.138 INCHES IN
THREAD QUANTITY PER INCH32
FASTENER LENGTH0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
HEAD STYLEFLAT COUNTERSUNK
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY MATERIAL
SPECIAL FEATURESCRES COMP 316 ONLY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
MS35200-24Interchangeable
interchangeable cross-reference
interchangeable
0210-2027Interchangeable
interchangeable cross-reference
interchangeable
MS51959&27Interchangeable
interchangeable cross-reference
interchangeable
MS51959-27Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51959-27S316?
MS51959-27S316 is a SCREW,MACHINE.
What parts can replace MS51959-27S316?
There are 4 known substitutes for MS51959-27S316: MS35200-24, 0210-2027, MS51959&27 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS51959-27S316?
MS51959-27S316 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-424-3571. 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