A-A-55623-188 — SCREW,MACHINE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

A-A-55623-188: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT COUNTERSUNK, thread_class: 2A A, head_diameter: 0.333 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN, thread_length: 0.636 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN, screw_material: PLASTIC POLYHEXAMETHYLENE AMIDE, fastener_length: 0.719 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-173-3522, 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

A-A-55623-188

NSN: 5305-01-173-3522
FSC: 5305 — Screws
CAGE: 58536 — FEDERAL COMMERCIAL ITEM DESCRIPTION PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)

SPECIFICATIONS

head_style	FLAT COUNTERSUNK
thread_class	2A A
head_diameter	0.333 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
thread_length	0.636 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
screw_material	PLASTIC POLYHEXAMETHYLENE AMIDE
fastener_length	0.719 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
thread_direction	RIGHT-HAND
countersink_angle	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
internal_drive_style	SLOT
nominal_thread_diameter	0.190 INCHES IN
thread_quantity_per_inch	24
thread_series_designator	UNIFIED NATIONAL COARSE (UNC)
NSN	5305-01-173-3522

COMPONENT DIAGRAM

KEY FEATURES

•

FASTENER LENGTH: 0.719 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN

•

SCREW MATERIAL DOCUMENT AND CLASSIFICATION: MIL-M-20693,TY 1 MIL SPEC SINGLE MATERIAL RESPONSE

•

THREAD LENGTH: 0.636 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN

•

NOMINAL THREAD DIAMETER: 0.190 INCHES IN

•

HEAD STYLE: FLAT COUNTERSUNK

•

THREAD DIRECTION: RIGHT-HAND

•

NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND 3S STYLE

•

SCREW MATERIAL: PLASTIC POLYHEXAMETHYLENE AMIDE

TECHNICAL CHARACTERISTICS

FASTENER LENGTH	0.719 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATION	MIL-M-20693,TY 1 MIL SPEC SINGLE MATERIAL RESPONSE
THREAD LENGTH	0.636 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER	0.190 INCHES IN
HEAD STYLE	FLAT COUNTERSUNK
THREAD DIRECTION	RIGHT-HAND
NONDEFINITIVE SPEC/STD DATA	1 TYPE AND 3S STYLE
SCREW MATERIAL	PLASTIC POLYHEXAMETHYLENE AMIDE
INTERNAL DRIVE STYLE	SLOT
COUNTERSINK ANGLE	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM

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 2

FF-S-92Reference document

Same NSN cross-reference

Reference document — Identification reference

MS18211-101CReference document

Same NSN cross-reference

Reference document — Secondary reference

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 A-A-55623-188?

A-A-55623-188 is a SCREW,MACHINE.

What parts can replace A-A-55623-188?

There are 2 known substitutes for A-A-55623-188: FF-S-92, MS18211-101C. Substitute compatibility should be verified for your specific system.

What is the NSN for A-A-55623-188?

A-A-55623-188 is cataloged in the U.S. Government catalog under NSN 5305-01-173-3522. This indicates validated use in U.S. government and defense supply chains.

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