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Technical Data Sheet
PartsTable / COMPONENT / MS16998-10
MS16998-10 ✓ 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,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT CHAMFER, head_height: 0.134 INCHES MINIMUM AND 0.138 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.218 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN, thread_length: 0.288 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-763-6963, 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
MS16998-10
NSN: 5305-00-763-6963
FSC: 5305
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT CHAMFER
head_height0.134 INCHES MINIMUM AND 0.138 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.218 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
thread_length0.288 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
fastener_length0.344 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
hardness_rating36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
width_across_flats0.109 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN
internal_drive_styleHEXAGON
NSN5305-00-763-6963
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS16998-10 · 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: PASSIVATE
•
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 MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES
•
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
THREAD LENGTH: 0.199 INCHES MINIMUM AND 0.292 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SCREW SURFACE TREATMENTPASSIVATE
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
SCREW MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES
NOMINAL THREAD DIAMETER0.138 INCHES IN
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
THREAD LENGTH0.199 INCHES MINIMUM AND 0.292 INCHES MAXIMUM IN
FASTENER LENGTH0.375 INCHES NOMINAL IN
COUNTERSINK ANGLE80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
22-244Interchangeable
interchangeable cross-reference
interchangeable
72-6970-585Interchangeable
interchangeable cross-reference
interchangeable
FFB185CLASS6TYPE264GRADE00Interchangeable
interchangeable cross-reference
interchangeable
220SD22Interchangeable
interchangeable cross-reference
interchangeable
10241-28Interchangeable
interchangeable cross-reference
interchangeable
MS51959-28BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS16998-10?
MS16998-10 is a SCREW,CAP,SOCKET HEAD.
What parts can replace MS16998-10?
There are 27 known substitutes for MS16998-10: 22-244, 72-6970-585, FFB185CLASS6TYPE264GRADE00 and 24 more. Substitute compatibility should be verified for your specific system.
Is MS16998-10 still available?
MS16998-10 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