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SH-138 — FRAME SECTION,SEAT,AIRCRAFT

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

SH-138: FRAME SECTION,SEAT,AIRCRAFT.

The FRAME SECTION,SEAT,AIRCRAFT is a the manufacturer industrial component. Key specifications include overall_length: 2.062 INCHES NOMINAL IN, inside_diameter: 1.375 INCHES NOMINAL IN, surface_treatment: CADMIUM OR CHROMATE AND ENAMEL, tapered_portion_length: 0.438 INCHES NOMINAL IN, large_end_outside_diameter: 2.625 INCHES NOMINAL IN, surface_treatment_document_and_classification: QQ-P-416, TYPE 2, CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-573-0391, 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
SH-138
NSN: 3120-00-573-0391
NIINs: 005730391, 010064106, 013304272
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 71840 — CLEVITE INDUSTRIES INC (USA)
SPECIFICATIONS
overall_length2.062 INCHES NOMINAL IN
inside_diameter1.375 INCHES NOMINAL IN
surface_treatmentCADMIUM OR CHROMATE AND ENAMEL
tapered_portion_length0.438 INCHES NOMINAL IN
large_end_outside_diameter2.625 INCHES NOMINAL IN
surface_treatment_document_and_classificationQQ-P-416, TYPE 2, CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE
NSN3120-00-573-0391
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: SH-138 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CORNER SHAPE: SQUARE INSIDE RIGHT CORNER
•
BODY OUTSIDE DIAMETER: 2.1325 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SPLIT, PLAIN, NO OUTSIDE FLANGES
•
BODY INSIDE DIAMETER: 1.9990 INCHES MINIMUM AND 2.0005 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE INSIDE RIGHT CORNER
CORNER SHAPESQUARE INSIDE LEFT CORNER
CORNER SHAPECHAMFERED OUTSIDE LEFT CORNER
CORNER SHAPECHAMFERED OUTSIDE RIGHT CORNER
BODY OUTSIDE DIAMETER2.1325 INCHES NOMINAL IN
STYLE DESIGNATORSPLIT, PLAIN, NO OUTSIDE FLANGES
OVERALL LENGTH2.2430 INCHES MINIMUM AND 2.2570 INCHES MAXIMUM IN
BODY INSIDE DIAMETER1.9990 INCHES MINIMUM AND 2.0005 INCHES MAXIMUM IN
ANTIROTATION/LUBRICATION TYPE AND QUANTITY1 HOLE
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 4
1961DRReference document
Same NSN cross-reference
Reference document — Secondary reference
9229-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
3120005730391Reference document
Same NSN cross-reference
Reference document — Secondary reference
49229-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SH-138?
SH-138 is a FRAME SECTION,SEAT,AIRCRAFT.
What parts can replace SH-138?
There are 4 known substitutes for SH-138: 1961DR, 9229-2, 3120005730391 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SH-138?
SH-138 is cataloged in the U.S. Government catalog under NSN 3120-00-573-0391. This indicates validated use in U.S. government and defense supply chains.
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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.