# K871037: Cancellous Fixation Screw & Washer for Use W/Screw

- Pathway: 510(k) (Traditional)
- Applicant: Concept, Inc.
- Decided: Mar 25, 1987 after 8 days
- Product code: HWC (Screw, Fixation, Bone)
- Device class: 2
- Regulation: 21 CFR 888.3040
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
10 later devices descend from it; 3 cite it directly.
0 of 11 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. FDA has not posted a summary or statement for it, so its predicates are not known.

## Most influential descendants
- K981967: Washerloc Screw System, Ligament Screw System, NO-Profile BI-Cortical Screw System, Channel Ligament Clamp, Heckman Scre (1998), 5 descendants of its own
- K122437: NO-Profile Screws NO-Profile Washer NO-Profile Screws Washerloc Washers (2013), 4 descendants of its own
- K193214: WasherLoc and No-Profile Screw and Washer Systems, Biomet Cannulated Screw System, Biomet Headless Compression and Twist-Off Screws (2020), 3 descendants of its own
- K961649: Acufex Tibial Anchor Screw & Spiked Washer (1996), 3 descendants of its own
- K211290: Cannulated Fasteners and Nuts (2021), 2 descendants of its own

Source page: https://510kreport.com/device/K871037
Methodology: https://510kreport.com/methodology