PartsTable
Technical Data Sheet
PartsTable / MRO / NAS4121-291B
NAS4121-291B ✓ 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 NAS4121-291B is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY, overall_width: 1.810 INCHES NOMINAL IN, overall_height: 0.750 INCHES NOMINAL IN, overall_length: 1.810 INCHES NOMINAL IN, surface_treatment: ANODIZE, specification/standard_data: 81349-MIL-A-87111/5 GOVERNMENT SPECIFICATION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5999-01-286-7295, 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→ NAS4121-291B
NSN: 5999-01-286-7295
FSC: 5999
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
overall_width1.810 INCHES NOMINAL IN
overall_height0.750 INCHES NOMINAL IN
overall_length1.810 INCHES NOMINAL IN
surface_treatmentANODIZE
specification/standard_data81349-MIL-A-87111/5 GOVERNMENT SPECIFICATION
unthreaded_mounting_hole_diameter0.190 INCHES NOMINAL ALL MOUNTING FACILITIES IN
mounting_facility_type_and_quantity2 UNTHREADED HOLE(S) ALL MOUNTING FACILITIES
material_document_and_classificationQQ-A-250 FED SPEC SINGLE MATERIAL RESPONSE
surface_treatment_document_and_classificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE
NSN5999-01-286-7295
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 NAS4121-291B MFR NAS4121-291B
KEY FEATURES
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250 FED SPEC SINGLE MATERIAL RESPONSE
•
TEST DATA DOCUMENT: 81349-MIL-S-87111 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
•
UNTHREADED MOUNTING HOLE DIAMETER: 0.190 INCHES NOMINAL ALL MOUNTING FACILITIES IN
•
SURFACE TREATMENT: ANODIZE
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH1.810 INCHES NOMINAL IN
OVERALL HEIGHT0.750 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250 FED SPEC SINGLE MATERIAL RESPONSE
TEST DATA DOCUMENT81349-MIL-S-87111 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
OVERALL LENGTH1.810 INCHES NOMINAL IN
UNTHREADED MOUNTING HOLE DIAMETER0.190 INCHES NOMINAL ALL MOUNTING FACILITIES IN
SURFACE TREATMENTANODIZE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE
SPECIFICATION/STANDARD DATA81349-MIL-A-87111/5 GOVERNMENT SPECIFICATION
MOUNTING FACILITY TYPE AND QUANTITY2 UNTHREADED HOLE(S) ALL MOUNTING FACILITIES
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
M87111/5-1H12Upgraded Successor
successor cross-reference
successor
MIL-H-87111/5Upgraded Successor
successor cross-reference
successor
M87111/05-1H12Upgraded Successor
successor cross-reference
successor
M87111/05-1A05Upgraded Successor
successor cross-reference
successor
60792-1Upgraded Successor
successor cross-reference
successor
10-0781Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NAS4121-291B?
NAS4121-291B is a NAS4121-291B. It is classified as a MRO (MRO_GENERAL).
What parts can replace NAS4121-291B?
There are 25 known substitutes for NAS4121-291B: M87111/5-1H12, MIL-H-87111/5, M87111/05-1H12 and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NAS4121-291B?
NAS4121-291B is cataloged in the Federal Logistics Information System (FLIS) under NSN 5999-01-286-7295. 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