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Technical Data Sheet
PartsTable / COMPONENT / MS16997-19
MS16997-19 ✓ 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: 0.282 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-978-9347, 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
MS16997-19
NSN: 5305-00-978-9347
FSC: 5305
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
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_length0.282 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
fastener_length0.344 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
hardness_rating38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
width_across_flats0.109 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN
internal_drive_styleHEXAGON
nominal_thread_diameter0.138 INCHES IN
NSN5305-00-978-9347
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS16997-19 · 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 DIRECTION: RIGHT-HAND
•
MATERIAL: STEEL OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
HEAD HEIGHT: 0.134 INCHES MINIMUM AND 0.138 INCHES MAXIMUM IN
•
HEAD DIAMETER: 0.218 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
•
THREAD QUANTITY PER INCH: 32
•
INTERNAL DRIVE STYLE: HEXAGON
•
THREAD LENGTH: 0.282 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
HEAD HEIGHT0.134 INCHES MINIMUM AND 0.138 INCHES MAXIMUM IN
HEAD DIAMETER0.218 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH32
INTERNAL DRIVE STYLEHEXAGON
THREAD LENGTH0.282 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
THREAD CLASS3A A
HEAD STYLEFLAT CHAMFER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
11193AInterchangeable
interchangeable cross-reference
interchangeable
00044Interchangeable
interchangeable cross-reference
interchangeable
50083Interchangeable
interchangeable cross-reference
interchangeable
7185-012Interchangeable
interchangeable cross-reference
interchangeable
B12-4RInterchangeable
interchangeable cross-reference
interchangeable
090-45099C6-12Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS16997-19?
MS16997-19 is a SCREW,CAP,SOCKET HEAD.
What parts can replace MS16997-19?
There are 21 known substitutes for MS16997-19: 11193A, 00044, 50083 and 18 more. Substitute compatibility should be verified for your specific system.
Is MS16997-19 still available?
MS16997-19 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