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Technical Data Sheet
PartsTable / COMPONENT / 02-2691
02-2691 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The CUP,TAPERED ROLLER BEARING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: STEEL CORROSION RESISTING OVERALL, blade_width: 1.250 INCHES NOMINAL IN, blade_length: 5.500 INCHES NOMINAL IN, special_features: STEINER-AUVARD WEIGHTED, SLIGHTLY CURVED BLADE 2.5 LBS (1136 G); REUSABLE LBS, weighted_feature: PROVIDED, part_name_assigned_by_controlling_agency: SPECULUM VAGINAL STEINER-AUVARD MILTEX WEIGHTED 2.5 LBS SLIGHTLY CURVED BLADE STAINLESS STEEL EA LBS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-386-5249, 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
02-2691
NSN: 5305-01-386-5249
FSC: 5305
CAGE: 14153 — DEFENSE LOGISTICS AGENCY DBA DEFENSE SUPPLY CENTER PHILADELPHIA (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
blade_width1.250 INCHES NOMINAL IN
blade_length5.500 INCHES NOMINAL IN
blade_quantity1
special_featuresSTEINER-AUVARD WEIGHTED, SLIGHTLY CURVED BLADE 2.5 LBS (1136 G); REUSABLE LBS
weighted_featurePROVIDED
part_name_assigned_by_controlling_agencySPECULUM VAGINAL STEINER-AUVARD MILTEX WEIGHTED 2.5 LBS SLIGHTLY CURVED BLADE STAINLESS STEEL EA LBS
NSN5305-01-386-5249
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 02-2691 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
THREAD LENGTH: 0.500 INCHES MAXIMUM IN
•
WIDTH BETWEEN FLATS: 0.1094 INCHES MINIMUM AND 0.1111 INCHES MAXIMUM IN
•
THREAD SERIES DESIGNATOR: UNRF
•
SCREW MATERIAL: STEEL UNS K03104
•
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY 2 CL 2 FED SPEC ALL TREATMENT RESPONSES
•
THREAD QUANTITY PER INCH: 40
•
NOMINAL THREAD DIAMETER: 0.138 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 (FLIS)
THREAD LENGTH0.500 INCHES MAXIMUM IN
WIDTH BETWEEN FLATS0.1094 INCHES MINIMUM AND 0.1111 INCHES MAXIMUM IN
THREAD SERIES DESIGNATORUNRF
SPECIAL FEATURESTHIS ITEM IS FLIGHT SAFETY CRITICAL. THREAD IS SAFETY CRITICAL, UNIFIED FORM SPECIAL PER FED-STD-H28/2, DIMENSIONS PER DRAWING 02269. APPLY ONE COAT OF MIL-P-23377, TY 1, CL 1 OR 3 AND TWO TOP COATS OF MIL-C-46168, COLOR CODE 33538 PER FED-STD-595 TO TOP OF HEAD.
SCREW MATERIALSTEEL UNS K03104
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 2 CL 2 FED SPEC ALL TREATMENT RESPONSES
THREAD QUANTITY PER INCH40
NOMINAL THREAD DIAMETER0.138 INCHES IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONASTM A574 ASSN STD SINGLE MATERIAL RESPONSE
CRITICALITY CODE JUSTIFICATIONFEAT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
SK90-3559Interchangeable
interchangeable cross-reference
interchangeable
5867903559Interchangeable
interchangeable cross-reference
interchangeable
90-3559Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 02-2691?
02-2691 is a CUP,TAPERED ROLLER BEARING.
What parts can replace 02-2691?
There are 3 known substitutes for 02-2691: SK90-3559, 5867903559, 90-3559. Substitute compatibility should be verified for your specific system.
What is the NSN for 02-2691?
02-2691 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-386-5249. 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