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BB1021 — RESISTOR,FIXED,COMPOSITION

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

BB1021: RESISTOR,FIXED,COMPOSITION.

The RESISTOR,FIXED,COMPOSITION is a the manufacturer industrial component. Key specifications include material: ASBESTOS AND STEEL OVERALL, body_length: 0.145 INCHES NOMINAL IN, body_diameter: 0.062 INCHES NOMINAL IN, hole_diameter: 0.562 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 3.000 INCHES NOMINAL IN, terminal_type: WIRE LEAD. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-291-7447, 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→ BB1021
NSN: 5330-00-291-7447
NIINs: 002917447, 004207124
FSC: 5330 — Packing and Gasket Materials
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)
SPECIFICATIONS
materialASBESTOS AND STEEL OVERALL
body_length0.145 INCHES NOMINAL IN
body_diameter0.062 INCHES NOMINAL IN
hole_diameter0.562 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width3.000 INCHES NOMINAL IN
terminal_typeWIRE LEAD
aperture_width2.000 INCHES NOMINAL IN
inclosure_typeENCAPSULATED
overall_length7.250 INCHES NOMINAL IN
aperture_length4.750 INCHES NOMINAL IN
style_designatorAXIAL TERMINAL EACH END
inside_corner_radius1.000 INCHES NOMINAL IN
NSN5330-00-291-7447
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: BB1021 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CROSS-SECTIONAL THICKNESS: 0.094 INCHES NOMINAL IN
•
INSIDE CORNER RADIUS: 1.000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NON-CIRCULAR
•
CROSS-SECTIONAL SHAPE STYLE: METAL WITH SOFT FILLER
•
APERTURE WIDTH: 2.000 INCHES NOMINAL IN
•
APERTURE LENGTH: 4.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.094 INCHES NOMINAL IN
INSIDE CORNER RADIUS1.000 INCHES NOMINAL IN
STYLE DESIGNATORNON-CIRCULAR
OVERALL LENGTH7.250 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEMETAL WITH SOFT FILLER
OVERALL WIDTH3.000 INCHES NOMINAL IN
APERTURE WIDTH2.000 INCHES NOMINAL IN
APERTURE LENGTH4.750 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH6.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
MATERIALASBESTOS AND STEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 8
15023Reference document
Same NSN cross-reference
Reference document — Secondary reference
17054AReference document
Same NSN cross-reference
Reference document — Secondary reference
8928Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
2UU0535Reference document
Same NSN cross-reference
Reference document — Secondary reference
15023AReference document
Same NSN cross-reference
Reference document — Secondary reference
31021FReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is BB1021?
BB1021 is a RESISTOR,FIXED,COMPOSITION. It is classified as a MRO (MRO_GENERAL).
What parts can replace BB1021?
There are 8 known substitutes for BB1021: 15023, 17054A, 8928 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BB1021?
BB1021 is cataloged in the U.S. Government catalog under NSN 5330-00-291-7447. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.