BB1781 — TELETYPEWRITER SUBASSEMBLY

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

BB1781: TELETYPEWRITER SUBASSEMBLY.

The TELETYPEWRITER SUBASSEMBLY is a the manufacturer industrial component. Key specifications include head_style: DOUBLE CHAMFER, head_height: 0.200 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.320 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN, thread_length: 0.160 INCHES NOMINAL IN, screw_material: STEEL COMP 8630. This part is cataloged in the U.S.

Government catalog under NSN 2520-00-350-5221, 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

BB1781

NSN: 2520-00-350-5221
FSC: 2520 — Vehicular Power Transmission Components
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)

SPECIFICATIONS

head_style	DOUBLE CHAMFER
head_height	0.200 INCHES NOMINAL IN
thread_class	2A A
head_diameter	0.320 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN
thread_length	0.160 INCHES NOMINAL IN
screw_material	STEEL COMP 8630
fastener_length	0.240 INCHES NOMINAL IN
thread_direction	RIGHT-HAND
internal_drive_style	SLOT
nominal_thread_diameter	0.190 INCHES IN
minimum_tensile_strength	90000 POUNDS PER SQUARE INCH LBS
thread_quantity_per_inch	32
NSN	2520-00-350-5221

COMPONENT DIAGRAM

SUBSTITUTES & CROSS-REFERENCES 5

12Y5371Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

27UV0649Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

380408004Reference document

Same NSN cross-reference

Reference document — Secondary reference

1735-21Reference document

Same NSN cross-reference

Reference document — Secondary reference

364729Reference 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 BB1781?

BB1781 is a TELETYPEWRITER SUBASSEMBLY.

What parts can replace BB1781?

There are 5 known substitutes for BB1781: 12Y5371, 27UV0649, 380408004 and 2 more. Substitute compatibility should be verified for your specific system.

What is the NSN for BB1781?

BB1781 is cataloged in the U.S. Government catalog under NSN 2520-00-350-5221. This indicates validated use in U.S. government and defense supply chains.

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