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PartsTable / COMPONENT / MS51850-106
MS51850-106 ✓ 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,TAPPING is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.208 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN, fastener_length: 0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN, features_provided: CASEHARDENED, surface_treatment: CADMIUM AND CHROMATE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-145-8368, 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
MS51850-106
NSN: 5305-00-145-8368
FSC: 5305
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.208 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN
fastener_length0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN
features_providedCASEHARDENED
surface_treatmentCADMIUM AND CHROMATE OVERALL
width_between_flats0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
internal_drive_styleSLOT
nonmachine_thread_styleGIMLET POINT (TYPE A, AB OR BA)
nondefinitive_spec/std_dataAB TYPE
nonmachine_nominal_thread_diameter0.312 INCHES IN
surface_treatment_document_and_classificationQQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5305-00-145-8368
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS51850-106 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
FEATURES PROVIDED: CASEHARDENED
•
WIDTH BETWEEN FLATS: 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
NONDEFINITIVE SPEC/STD DATA: AB TYPE
•
MATERIAL: STEEL OVERALL
•
FASTENER LENGTH: 0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
HEAD STYLE: HEXAGON
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
FEATURES PROVIDEDCASEHARDENED
WIDTH BETWEEN FLATS0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATAAB TYPE
MATERIALSTEEL OVERALL
FASTENER LENGTH0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
HEAD STYLEHEXAGON
INTERNAL DRIVE STYLESLOT
HEAD HEIGHT0.208 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
FF-S-107CInterchangeable
interchangeable cross-reference
interchangeable
80X658Interchangeable
interchangeable cross-reference
interchangeable
143189Interchangeable
interchangeable cross-reference
interchangeable
FFS107TYPECSSTYLE6SInterchangeable
interchangeable cross-reference
interchangeable
172046Interchangeable
interchangeable cross-reference
interchangeable
FFS107Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51850-106?
MS51850-106 is a SCREW,TAPPING.
What parts can replace MS51850-106?
There are 18 known substitutes for MS51850-106: FF-S-107C, 80X658, 143189 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS51850-106?
MS51850-106 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-145-8368. 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