HT4UA-18 — SCREW,CLOSE TOLERANCE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

HT4UA-18: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 8740 OR STEEL COMP 8735 OR STEEL COMP 4130 OVERALL, head_style: FLAT COUNTERSUNK, grip_length: 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN, head_diameter: 0.4640 INCHES MINIMUM AND 0.5066 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-232-4372, 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

HT4UA-18

NSN: 5305-00-232-4372
FSC: 5305 — Screws
CAGE: 73197 — HI-SHEAR CORPORATION (USA)

SPECIFICATIONS

material	STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 8740 OR STEEL COMP 8735 OR STEEL COMP 4130 OVERALL
head_style	FLAT COUNTERSUNK
grip_length	1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN
thread_class	3A A
grip_diameter	0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
head_diameter	0.4640 INCHES MINIMUM AND 0.5066 INCHES MAXIMUM IN
thread_length	0.469 INCHES NOMINAL IN
surface_finish	32.0 MICROINCHES GRIP
fastener_length	1.578 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN
hardness_rating	36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
special_features	TNCLUDES O RING,SYNTHETIC RUBBER PER MIL-R-6855 GRADE 60 CLASSES 1,2,3
thread_direction	RIGHT-HAND
NSN	5305-00-232-4372

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE FINISH: 32.0 MICROINCHES THREADS

•

FASTENER LENGTH: 1.578 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

THREAD LENGTH: 0.469 INCHES NOMINAL 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	1.578 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416 TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH	0.469 INCHES NOMINAL 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: Normally procured from the manufacturer (OEM)No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is HT4UA-18?

HT4UA-18 is a SCREW,CLOSE TOLERANCE.

What is the NSN for HT4UA-18?

HT4UA-18 is cataloged in the U.S. Government catalog under NSN 5305-00-232-4372. This indicates validated use in U.S. government and defense supply chains.

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HT4UA-18 — SCREW,CLOSE TOLERANCE

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