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Technical Data Sheet
PartsTable / COMPONENT / MS16998-43
MS16998-43 ✓ 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 SEMICONDUCTOR DEVICE,DIODE is a the manufacturer industrial component. Key specifications include material: GLASS ENCLOSURE, head_style: FLAT CHAMFER, head_height: 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN, thread_length: 0.648 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-983-6660, 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
MS16998-43
NSN: 5305-00-983-6660
FSC: 5305
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialGLASS ENCLOSURE
head_styleFLAT CHAMFER
head_height0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
thread_length0.648 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
overall_length0.130 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
fastener_length0.719 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
hardness_rating38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
mounting_methodTERMINAL
terminal_length0.900 INCHES MINIMUM AND 1.300 INCHES MAXIMUM IN
overall_diameter0.110 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
NSN5305-00-983-6660
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS16998-43 · 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
•
WIDTH ACROSS FLATS: 0.187 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
•
MINIMUM TENSILE STRENGTH: 160000 POUNDS PER SQUARE INCH LBS
•
THREAD SERIES DESIGNATOR: UNF
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
HARDNESS RATING: 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL: STEEL OVERALL
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
INTERNAL DRIVE STYLE: HEXAGON
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH ACROSS FLATS0.187 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
MINIMUM TENSILE STRENGTH160000 POUNDS PER SQUARE INCH LBS
THREAD SERIES DESIGNATORUNF
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
MATERIALSTEEL OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
INTERNAL DRIVE STYLEHEXAGON
THREAD QUANTITY PER INCH28
THREAD CLASS3A A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
710011Interchangeable
interchangeable cross-reference
interchangeable
659969Interchangeable
interchangeable cross-reference
interchangeable
MS35458-23Interchangeable
interchangeable cross-reference
interchangeable
4006T42P01Interchangeable
interchangeable cross-reference
interchangeable
G492096-650Interchangeable
interchangeable cross-reference
interchangeable
TXV1N5417Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS16998-43?
MS16998-43 is a SEMICONDUCTOR DEVICE,DIODE.
What parts can replace MS16998-43?
There are 17 known substitutes for MS16998-43: 710011, 659969, MS35458-23 and 14 more. Substitute compatibility should be verified for your specific system.
Is MS16998-43 still available?
MS16998-43 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