CA21170-3-4 — SCREW,MACHINE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

CA21170-3-4: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT COUNTERSUNK, thread_class: 3A A, head_diameter: 0.258 INCHES MINIMUM IN, thread_length: 0.256 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN, screw_material: IRON ALLOY 660, fastener_length: 0.578 INCHES MINIMUM AND 0.598 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-128-5102, 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

CA21170-3-4

NSN: 5305-01-128-5102
FSC: 5305 — Screws
CAGE: 29372 — HOWMET GLOBAL FASTENING SYSTEMS INC. DIV TRIDAIR PRODUCTS (USA)

SPECIFICATIONS

head_style	FLAT COUNTERSUNK
thread_class	3A A
head_diameter	0.258 INCHES MINIMUM IN
thread_length	0.256 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN
screw_material	IRON ALLOY 660
fastener_length	0.578 INCHES MINIMUM AND 0.598 INCHES MAXIMUM IN
special_features	THREE SLOTS EQUALLY SPACED ALONG LONGITUDINAL AXIS ON OUTSIDE DIAMETERS. LENGTH 0.513 IN. WIDTH 0.028 IN. MIN 0.033 IN. MAX. IN
thread_direction	RIGHT-HAND
countersink_angle	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
internal_drive_style	CROSS RECESS TYPE 1
nominal_thread_diameter	0.190 INCHES IN
screw_surface_treatment	CADMIUM AND CHROMATE
NSN	5305-01-128-5102

COMPONENT DIAGRAM

KEY FEATURES

•

SCREW SURFACE TREATMENT: CADMIUM AND CHROMATE

•

FASTENER LENGTH: 0.578 INCHES MINIMUM AND 0.598 INCHES MAXIMUM IN

•

SCREW MATERIAL DOCUMENT AND CLASSIFICATION: AMS5732 ASSN STD 1ST MATERIAL RESPONSE OR AMS5737 ASSN STD 2ND MATERIAL RESPONSE

•

THREAD LENGTH: 0.256 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN

•

NOMINAL THREAD DIAMETER: 0.190 INCHES IN

•

HEAD STYLE: FLAT COUNTERSUNK

•

THREAD DIRECTION: RIGHT-HAND

•

SCREW MATERIAL: IRON ALLOY 660

TECHNICAL CHARACTERISTICS

SCREW SURFACE TREATMENT	CADMIUM AND CHROMATE
FASTENER LENGTH	0.578 INCHES MINIMUM AND 0.598 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATION	AMS5732 ASSN STD 1ST MATERIAL RESPONSE OR AMS5737 ASSN STD 2ND MATERIAL RESPONSE
THREAD LENGTH	0.256 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER	0.190 INCHES IN
HEAD STYLE	FLAT COUNTERSUNK
THREAD DIRECTION	RIGHT-HAND
SCREW MATERIAL	IRON ALLOY 660
SPECIAL FEATURES	THREE SLOTS EQUALLY SPACED ALONG LONGITUDINAL AXIS ON OUTSIDE DIAMETERS. LENGTH 0.513 IN. WIDTH 0.028 IN. MIN 0.033 IN. MAX. IN
MINIMUM TENSILE STRENGTH	130000 POUNDS PER SQUARE INCH LBS

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

CA21097-3-4Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is CA21170-3-4?

CA21170-3-4 is a SCREW,MACHINE.

What parts can replace CA21170-3-4?

There is 1 known substitute for CA21170-3-4: CA21097-3-4. Substitute compatibility should be verified for your specific system.

What is the NSN for CA21170-3-4?

CA21170-3-4 is cataloged in the U.S. Government catalog under NSN 5305-01-128-5102. This indicates validated use in U.S. government and defense supply chains.

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