NAS1189-4T42K — SCREW,CAP,SOCKET HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

NAS1189-4T42K: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL COMP E4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8735 OR STEEL COMP 6150 OVERALL, head_style: FLAT COUNTERSUNK, thread_class: 3A A, head_diameter: 0.442 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN, thread_length: 1.750 INCHES MINIMUM IN, surface_finish: 32.0 MICROINCHES GRIP. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-083-0776, 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

NAS1189-4T42K

NSN: 5305-01-083-0776
FSC: 5305 — Screws
CAGE: 16941 — LONG-LOK LLC (USA)

SPECIFICATIONS

material	STEEL COMP E4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8735 OR STEEL COMP 6150 OVERALL
head_style	FLAT COUNTERSUNK
thread_class	3A A
head_diameter	0.442 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
thread_length	1.750 INCHES MINIMUM IN
surface_finish	32.0 MICROINCHES GRIP
fastener_length	2.531 INCHES MINIMUM AND 2.625 INCHES MAXIMUM IN
hardness_rating	36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
locking_feature	PELLET OR STRIP THREADS
thread_direction	RIGHT-HAND
countersink_angle	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
surface_treatment	CADMIUM AND CHROMATE OVERALL
NSN	5305-01-083-0776

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE FINISH: 32.0 MICROINCHES THREADS

•

FASTENER LENGTH: 2.531 INCHES MINIMUM AND 2.625 INCHES MAXIMUM IN

•

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

•

THREAD LENGTH: 1.750 INCHES MINIMUM IN

•

HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL

•

NOMINAL THREAD DIAMETER: 0.250 INCHES IN

TECHNICAL CHARACTERISTICS

SURFACE FINISH	32.0 MICROINCHES THREADS
SURFACE FINISH	32.0 MICROINCHES GRIP
SURFACE FINISH	32.0 MICROINCHES BEARING SURFACE OF HEAD
FASTENER LENGTH	2.531 INCHES MINIMUM AND 2.625 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH	1.750 INCHES MINIMUM IN
HARDNESS RATING	36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER	0.250 INCHES IN
HEAD STYLE	FLAT COUNTERSUNK
THREAD DIRECTION	RIGHT-HAND

OTHER ITEMS IN FSC 5305 — Screws

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753

SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is NAS1189-4T42K?

NAS1189-4T42K is a SCREW,CAP,SOCKET HEAD.

What is the NSN for NAS1189-4T42K?

NAS1189-4T42K is cataloged in the U.S. Government catalog under NSN 5305-01-083-0776. This indicates validated use in U.S. government and defense supply chains.

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NAS1189-4T42K — SCREW,CAP,SOCKET HEAD

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