ST3M491C4-2-3 — PIN-RIVET

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

ST3M491C4-2-3: PIN-RIVET.

The PIN-RIVET is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, grip_length: 0.130 INCHES MAXIMUM IN, head_height: 0.059 INCHES MINIMUM AND 0.061 INCHES MAXIMUM IN, lubrication: CETYL ALCOHOL, shank_style: PIN-RIVET, STRAIGHT, THREADED, thread_class: 3A A. This part is cataloged in the U.S.

Government catalog under NSN 5320-01-024-8513, 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

ST3M491C4-2-3

NSN: 5320-01-024-8513
FSC: 5320 — Rivets
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)

SPECIFICATIONS

material	IRON ALLOY 660 OVERALL
grip_length	0.130 INCHES MAXIMUM IN
head_height	0.059 INCHES MINIMUM AND 0.061 INCHES MAXIMUM IN
lubrication	CETYL ALCOHOL
shank_style	PIN-RIVET, STRAIGHT, THREADED
thread_class	3A A
shank_diameter	0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
shear_strength	95000 SINGLE POUNDS PER SQUARE INCH
fastener_length	0.510 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN
thread_direction	RIGHT-HAND
countersink_angle	100.0 DEGREES NOMINAL
surface_treatment	PASSIVATE OVERALL
NSN	5320-01-024-8513

COMPONENT DIAGRAM

KEY FEATURES

•

SHANK DIAMETER: 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN

•

LUBRICATION: CETYL ALCOHOL

•

HEAD HEIGHT: 0.059 INCHES MINIMUM AND 0.061 INCHES MAXIMUM IN

•

FASTENER LENGTH: 0.510 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: 258,FSCM 73197 MFR REF SINGLE TREATMENT RESPONSE OVERALL

•

MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.250 INCHES IN

TECHNICAL CHARACTERISTICS

SHANK DIAMETER	0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
LUBRICATION	CETYL ALCOHOL
HEAD HEIGHT	0.059 INCHES MINIMUM AND 0.061 INCHES MAXIMUM IN
FASTENER LENGTH	0.510 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	258,FSCM 73197 MFR REF SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.250 INCHES IN
GRIP LENGTH	0.130 INCHES MAXIMUM IN
WIDTH BETWEEN FLATS	0.0947 INCHES MINIMUM AND 0.0967 INCHES MAXIMUM IN

OTHER ITEMS IN FSC 5320 — Rivets

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

5320-00-001-1756 5320-00-001-2042 5320-00-001-3944 5320-00-001-5126 5320-00-001-5151 5320-00-001-5152 5320-00-001-5153

SUBSTITUTES & CROSS-REFERENCES 1

HL429-8-2-3Reference document

Same NSN cross-reference

Reference document — Secondary reference

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 ST3M491C4-2-3?

ST3M491C4-2-3 is a PIN-RIVET.

What parts can replace ST3M491C4-2-3?

There is 1 known substitute for ST3M491C4-2-3: HL429-8-2-3. Substitute compatibility should be verified for your specific system.

What is the NSN for ST3M491C4-2-3?

ST3M491C4-2-3 is cataloged in the U.S. Government catalog under NSN 5320-01-024-8513. This indicates validated use in U.S. government and defense supply chains.

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