ET156R-3 — INSERT,SCREW THREAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

ET156R-3: INSERT,SCREW THREAD.

The INSERT,SCREW THREAD is a the manufacturer industrial component. Key specifications include length: 0.556 INCHES NOMINAL IN, material: IRON ALLOY 660 OVERALL, insert_size: 0.500-20 UNF-2A A, thread_class: 3B, special_features: 0.040 IN. TOTAL FLOAT INTERNAL NUT IN, surface_treatment: PASSIVATE OVERALL.

This part is cataloged in the U.S. Government catalog under NSN 5325-01-291-9216, 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

ET156R-3

NSN: 5325-01-291-9216
FSC: 5325 — Fastening Devices
CAGE: 84256 — AVIBANK MFG., INC. DBA AVIBANK MANUFACTURING INC (USA)

SPECIFICATIONS

length	0.556 INCHES NOMINAL IN
material	IRON ALLOY 660 OVERALL
insert_size	0.500-20 UNF-2A A
thread_class	3B
special_features	0.040 IN. TOTAL FLOAT INTERNAL NUT IN
surface_treatment	PASSIVATE OVERALL
nominal_thread_size	0.250 INCHES IN
thread_quantity_per_inch	28
thread_series_designator	UNF
full_internal_thread_length	0.250 INCHES NOMINAL IN
material_document_and_classification	AMS 5371 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classification	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN	5325-01-291-9216

COMPONENT DIAGRAM

KEY FEATURES

•

LENGTH: 0.556 INCHES NOMINAL IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

INSERT SIZE: 0.500-20 UNF-2A A

•

MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5371 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

•

NOMINAL THREAD SIZE: 0.250 INCHES IN

•

FULL INTERNAL THREAD LENGTH: 0.250 INCHES NOMINAL IN

•

SURFACE TREATMENT: PASSIVATE OVERALL

TECHNICAL CHARACTERISTICS

LENGTH	0.556 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
INSERT SIZE	0.500-20 UNF-2A A
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5371 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD SIZE	0.250 INCHES IN
FULL INTERNAL THREAD LENGTH	0.250 INCHES NOMINAL IN
SPECIAL FEATURES	0.040 IN. TOTAL FLOAT INTERNAL NUT IN
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	3B
THREAD QUANTITY PER INCH	28

OTHER ITEMS IN FSC 5325 — Fastening Devices

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

5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317

SUBSTITUTES & CROSS-REFERENCES 2

717801773-001Reference document

Same NSN cross-reference

Reference document — Secondary reference

717801773Reference document

Same NSN cross-reference

Reference document — Vendor item drawing 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 ET156R-3?

ET156R-3 is a INSERT,SCREW THREAD.

What parts can replace ET156R-3?

There are 2 known substitutes for ET156R-3: 717801773-001, 717801773. Substitute compatibility should be verified for your specific system.

What is the NSN for ET156R-3?

ET156R-3 is cataloged in the U.S. Government catalog under NSN 5325-01-291-9216. This indicates validated use in U.S. government and defense supply chains.

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