4891-63 — RACK,STORAGE,DATA TAPE

✓ Government record, cited

— · IT_GENERAL · SUPPORT_EQUIPMENT

PRODUCT OVERVIEW

4891-63: RACK,STORAGE,DATA TAPE.

The RACK,STORAGE,DATA TAPE is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: STEEL COMP H11 OVERALL, nut_style: DOUBLE HEXAGON, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.160 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN, locking_feature: PREVAILING TORQUE ALL METAL DESIGN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-931-8531, 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

IT_GENERAL→ SUPPORT_EQUIPMENT→ 4891-63

NSN: 5310-00-931-8531
NIINs: 009318531, 010107805
FSC: 5310 — Nuts and Washers
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)

SPECIFICATIONS

material	STEEL COMP H11 OVERALL
nut_style	DOUBLE HEXAGON
thread_class	3B
thread_series	UNIFIED NATIONAL JOINT FINE (UNJF)
overall_height	0.160 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
locking_feature	PREVAILING TORQUE ALL METAL DESIGN
thread_direction	RIGHT-HAND
washer_thickness	0.025 INCHES NOMINAL IN
surface_treatment	CADMIUM OVERALL
width_across_flats	0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
nominal_thread_size	0.190 INCHES IN
washer_outside_diameter	0.317 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
NSN	5310-00-931-8531

COMPONENT DIAGRAM

KEY FEATURES

•

WASHER OUTSIDE DIAMETER: 0.317 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN

•

WIDTH ACROSS FLATS: 0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN

•

THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)

•

WASHER THICKNESS: 0.025 INCHES NOMINAL IN

•

MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6485 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.190 INCHES IN

TYPICAL APPLICATIONS

Long-term data archival and compliance retention
Offsite backup and disaster recovery
Air-gapped ransomware protection
Cold storage tier for infrequently accessed data

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	0.160 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER	0.317 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
WIDTH ACROSS FLATS	0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
THREAD SERIES	UNIFIED NATIONAL JOINT FINE (UNJF)
WASHER THICKNESS	0.025 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 6485 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.190 INCHES IN
LOCKING FEATURE	PREVAILING TORQUE ALL METAL DESIGN
SURFACE TREATMENT	CADMIUM OVERALL

SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 4891-63?

4891-63 is a RACK,STORAGE,DATA TAPE. It is classified as a IT_GENERAL (SUPPORT_EQUIPMENT).

What is the NSN for 4891-63?

4891-63 is cataloged in the U.S. Government catalog under NSN 5310-00-931-8531. This indicates validated use in U.S. government and defense supply chains.

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4891-63 — RACK,STORAGE,DATA TAPE

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