A559-40 — SCREW,SHOULDER

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

A559-40: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, head_style: FLAT CHAMFER, head_height: 0.063 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 0.375 INCHES NOMINAL IN, thread_length: 0.172 INCHES MINIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-797-9640, 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

A559-40

NSN: 5305-00-797-9640
FSC: 5305 — Screws
CAGE: 34228 — L3 TECHNOLOGIES, INC. DIV L3 KEO (USA)

SPECIFICATIONS

material	STEEL COMP 303 OVERALL
head_style	FLAT CHAMFER
head_height	0.063 INCHES NOMINAL IN
thread_class	3A A
head_diameter	0.375 INCHES NOMINAL IN
thread_length	0.172 INCHES MINIMUM IN
shoulder_shape	ROUND FIRST SHOULDER
fastener_length	0.312 INCHES NOMINAL IN
shoulder_length	0.109 INCHES NOMINAL FIRST SHOULDER IN
special_features	THD RELIEVED GROOVE 0.031 IN. W IN
thread_direction	RIGHT-HAND
shoulder_diameter	0.271 INCHES MINIMUM AND 0.281 INCHES MAXIMUM FIRST SHOULDER IN
NSN	5305-00-797-9640

COMPONENT DIAGRAM

KEY FEATURES

•

HEAD HEIGHT: 0.063 INCHES NOMINAL IN

•

FASTENER LENGTH: 0.312 INCHES NOMINAL IN

•

SHOULDER LENGTH: 0.109 INCHES NOMINAL FIRST SHOULDER IN

•

SHOULDER DIAMETER: 0.271 INCHES MINIMUM AND 0.281 INCHES MAXIMUM FIRST SHOULDER IN

•

THREAD LENGTH: 0.172 INCHES MINIMUM IN

•

SHOULDER SHAPE: ROUND FIRST SHOULDER

•

NOMINAL THREAD DIAMETER: 0.112 INCHES IN

•

HEAD STYLE: FLAT CHAMFER

TECHNICAL CHARACTERISTICS

HEAD HEIGHT	0.063 INCHES NOMINAL IN
FASTENER LENGTH	0.312 INCHES NOMINAL IN
SHOULDER LENGTH	0.109 INCHES NOMINAL FIRST SHOULDER IN
SHOULDER DIAMETER	0.271 INCHES MINIMUM AND 0.281 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH	0.172 INCHES MINIMUM IN
SHOULDER SHAPE	ROUND FIRST SHOULDER
NOMINAL THREAD DIAMETER	0.112 INCHES IN
HEAD STYLE	FLAT CHAMFER
THREAD DIRECTION	RIGHT-HAND
SPECIAL FEATURES	THD RELIEVED GROOVE 0.031 IN. W IN

OTHER ITEMS IN FSC 5305 — Screws

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

5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831

SUBSTITUTES & CROSS-REFERENCES 1

F559-5ITEM20Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is A559-40?

A559-40 is a SCREW,SHOULDER.

What parts can replace A559-40?

There is 1 known substitute for A559-40: F559-5ITEM20. Substitute compatibility should be verified for your specific system.

What is the NSN for A559-40?

A559-40 is cataloged in the U.S. Government catalog under NSN 5305-00-797-9640. This indicates validated use in U.S. government and defense supply chains.

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