MS16997-51L — SCREW,CAP,SOCKET HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

MS16997-51L: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON LOCKING FEATURE, head_style: FLAT CHAMFER, head_height: 0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.303 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN, thread_length: 0.859 INCHES MINIMUM AND 0.906 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-419-3052, 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

MS16997-51L

NSN: 5305-01-419-3052
FSC: 5305 — Screws
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

SPECIFICATIONS

material	PLASTIC POLYAMIDE NYLON LOCKING FEATURE
head_style	FLAT CHAMFER
head_height	0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
thread_class	3A A
head_diameter	0.303 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
thread_length	0.859 INCHES MINIMUM AND 0.906 INCHES MAXIMUM IN
fastener_length	1.734 INCHES MINIMUM AND 1.781 INCHES MAXIMUM IN
hardness_rating	36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
locking_feature	PATCH OR STRIP THREADS
thread_direction	RIGHT-HAND
surface_treatment	CADMIUM OVERALL
width_across_flats	0.156 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN
NSN	5305-01-419-3052

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.156 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN

•

HEAD HEIGHT: 0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN

•

FASTENER LENGTH: 1.734 INCHES MINIMUM AND 1.781 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

THREAD LENGTH: 0.859 INCHES MINIMUM AND 0.906 INCHES MAXIMUM IN

•

HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL

•

NOMINAL THREAD DIAMETER: 0.190 INCHES IN

•

HEAD STYLE: FLAT CHAMFER

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.156 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN
HEAD HEIGHT	0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
FASTENER LENGTH	1.734 INCHES MINIMUM AND 1.781 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH	0.859 INCHES MINIMUM AND 0.906 INCHES MAXIMUM IN
HARDNESS RATING	36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER	0.190 INCHES IN
HEAD STYLE	FLAT CHAMFER
THREAD DIRECTION	RIGHT-HAND
LOCKING FEATURE	PATCH OR STRIP THREADS

SUBSTITUTES & CROSS-REFERENCES 3

904287Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

3798326 FIND 87Reference document

Same NSN cross-reference

Reference document — Secondary reference

5305PL0679656Reference document

Same NSN cross-reference

Reference document — Informative reference only

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is MS16997-51L?

MS16997-51L is a SCREW,CAP,SOCKET HEAD.

What parts can replace MS16997-51L?

There are 3 known substitutes for MS16997-51L: 904287, 3798326 FIND 87, 5305PL0679656. Substitute compatibility should be verified for your specific system.

What is the NSN for MS16997-51L?

MS16997-51L is cataloged in the U.S. Government catalog under NSN 5305-01-419-3052. This indicates validated use in U.S. government and defense supply chains.

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