HT51UA-22 — SCREW,SHOULDER

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

HT51UA-22: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT COUNTERSUNK, thread_class: 3A A, head_diameter: 0.628 INCHES MINIMUM AND 0.633 INCHES MAXIMUM IN, thread_length: 0.505 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-006-2075, 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

HT51UA-22

NSN: 5305-01-006-2075
FSC: 5305 — Screws
CAGE: L4528 — LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC (CAN)

SPECIFICATIONS

material	STEEL OVERALL
head_style	FLAT COUNTERSUNK
thread_class	3A A
head_diameter	0.628 INCHES MINIMUM AND 0.633 INCHES MAXIMUM IN
thread_length	0.505 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
shoulder_shape	ROUND FIRST SHOULDER
fastener_length	1.890 INCHES MINIMUM AND 1.937 INCHES MAXIMUM IN
shoulder_length	1.281 INCHES MINIMUM AND 1.303 INCHES MAXIMUM FIRST SHOULDER IN
special_features	SHANK GROOVED NEAR HEAD TO ACCOMMODATE O RING,FURNISHED WITH ONE O RING
thread_direction	RIGHT-HAND
countersink_angle	100.0 DEGREES NOMINAL
shoulder_diameter	0.326 INCHES MINIMUM AND 0.327 INCHES MAXIMUM FIRST SHOULDER IN
NSN	5305-01-006-2075

COMPONENT DIAGRAM

KEY FEATURES

•

FASTENER LENGTH: 1.890 INCHES MINIMUM AND 1.937 INCHES MAXIMUM IN

•

SHOULDER LENGTH: 1.281 INCHES MINIMUM AND 1.303 INCHES MAXIMUM FIRST SHOULDER IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: 3-53 FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL

•

SHOULDER DIAMETER: 0.326 INCHES MINIMUM AND 0.327 INCHES MAXIMUM FIRST SHOULDER IN

•

THREAD LENGTH: 0.505 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN

•

SHOULDER SHAPE: ROUND FIRST SHOULDER

•

MATERIAL DOCUMENT AND CLASSIFICATION: 3-53 FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL

•

NOMINAL THREAD DIAMETER: 0.312 INCHES IN

TECHNICAL CHARACTERISTICS

FASTENER LENGTH	1.890 INCHES MINIMUM AND 1.937 INCHES MAXIMUM IN
SHOULDER LENGTH	1.281 INCHES MINIMUM AND 1.303 INCHES MAXIMUM FIRST SHOULDER IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	3-53 FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL
SHOULDER DIAMETER	0.326 INCHES MINIMUM AND 0.327 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH	0.505 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
SHOULDER SHAPE	ROUND FIRST SHOULDER
MATERIAL DOCUMENT AND CLASSIFICATION	3-53 FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER	0.312 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 3

3M51-5-22Reference document

Same NSN cross-reference

Reference document — Vendor item drawing reference

HT404A-5-22Reference document

Same NSN cross-reference

Reference document — Secondary reference

54267-5-22Reference document

Same NSN cross-reference

Reference document — Secondary reference

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 HT51UA-22?

HT51UA-22 is a SCREW,SHOULDER.

What parts can replace HT51UA-22?

There are 3 known substitutes for HT51UA-22: 3M51-5-22, HT404A-5-22, 54267-5-22. Substitute compatibility should be verified for your specific system.

What is the NSN for HT51UA-22?

HT51UA-22 is cataloged in the U.S. Government catalog under NSN 5305-01-006-2075. This indicates validated use in U.S. government and defense supply chains.

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