PartsTable
Technical Data Sheet
Download PDF

1021957 — RING,RETAINING,OPTICAL ELEMENT

✓ Government record, cited
3M · MRO · MRO_GENERAL
PRODUCT OVERVIEW

1021957: RING,RETAINING,OPTICAL ELEMENT.

The RING,RETAINING,OPTICAL ELEMENT is a 3M optical transceiver module designed for high-speed data center interconnects. Key specifications include end_item_identification: LOADER, SCOOP TYPE; NSN 3805-01-533-1768. This part is cataloged in the U.S.

Government catalog under NSN 4810-01-528-4431, 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→ 1021957
NSN: 4810-01-528-4431
NIINs: 015284431, 015435767, 016644791
FSC: 4810 — Valves, Powered
CAGE: 61208 — TWIN DISC, INCORPORATED DBA TWIN DISC MID-ATLANTIC (USA)
SPECIFICATIONS
end_item_identificationLOADER, SCOOP TYPE; NSN 3805-01-533-1768
NSN4810-01-528-4431
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1021957 · 3M ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
TYPICAL APPLICATIONS
  • Data center switch-to-switch interconnects
  • Server-to-storage fabric connectivity
  • Long-distance fiber optic links
  • High-speed uplink connections (10G/25G/40G/100G)
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATION2320-01-519-8173
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
Ready to buy 1021957?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 1021957?
1021957 is a RING,RETAINING,OPTICAL ELEMENT manufactured by 3M. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 1021957?
1021957 is cataloged in the U.S. Government catalog under NSN 4810-01-528-4431. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 1021957

✓ 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.