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Technical Data Sheet
PartsTable / MRO / B1278
B1278 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
SAS cables have specific lane counts: 4i (internal) or 4e (external) Cable length matters — too short won't reach, too long creates clutter
Verify connector type on BOTH ends — many SAS cables are asymmetric
PRODUCT OVERVIEW

The B1278 is a the manufacturer industrial component. Key specifications include body_width: 1.375 INCHES NOMINAL IN, body_height: 1.812 INCHES NOMINAL IN, body_length: 2.188 INCHES NOMINAL IN, inclosure_type: FULLY INCLOSED, mounting_method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP, frequency_rating: 50.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM SINGLE COMPONENT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5998-01-565-8979, 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
MRO→ MRO_GENERAL→ B1278
NSN: 5998-01-565-8979
FSC: 5998 — CIRCUIT CARD ASSEMBLY
CAGE: 90536 — LOCKHEED MARTIN CORP DBA LOCKHEED MARTIN DIV MST - EAGAN (USA)
SPECIFICATIONS
body_width1.375 INCHES NOMINAL IN
body_height1.812 INCHES NOMINAL IN
body_length2.188 INCHES NOMINAL IN
inclosure_typeFULLY INCLOSED
mounting_methodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
frequency_rating50.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM SINGLE COMPONENT
nominal_thread_size0.138 INCHES SINGLE GROUP IN
reliability_indicatorNOT ESTABLISHED
mounting_hole_diameter0.138 INCHES NOMINAL SINGLE GROUP IN
thread_quantity_per_inch32 SINGLE GROUP
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
winding_operating_voltage6.30 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
NSN5998-01-565-8979
COMPONENT DIAGRAM
CONN A SFF-8482 CONN B SFF-8087 LENGTH: SAS CABLE ASSEMBLY | SFF-8482 to SFF-8087 Cable length: | SAS | Shielded TITLE CABLE ASSY PN B1278 MFR B1278
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
1278Interchangeable
interchangeable cross-reference
interchangeable
B1278Interchangeable
interchangeable cross-reference
interchangeable
147005-1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B1278?
B1278 is a B1278. It is classified as a MRO (MRO_GENERAL).
What parts can replace B1278?
There are 3 known substitutes for B1278: 1278, B1278, 147005-1. Substitute compatibility should be verified for your specific system.
What is the NSN for B1278?
B1278 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5998-01-565-8979. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026