NUT.31-18 Hex Ctrlk
Genuine Briggs & Stratton OEM · Part number 71391MA
The NUT.31-18 Hex Ctrlk is a genuine Briggs & Stratton hardware part, OEM part number 71391MA. Dykes Motors sells it for $24.23. It is in stock to order online, or you can pick it up at our store. Not sure it fits your machine? Send the model and serial number to the parts desk before you order. Dykes Motors is an authorized Bobcat, LS Tractor, and Ferris dealer with genuine parts and service on site.
Price and availability checked
We accept Visa, Mastercard, American Express, Discover, Apple Pay, Google Pay, Amazon Pay, PayPal, Venmo, and Klarna.
In stock. Ships within 1 to 2 business days, arrives in 3 to 5 more — by Fri, Oct 16. Free shipping on every parts order. Free pickup at 3069 Hwy 49.
Genuine OEM part. Manufacturer warranty honored at our dealership.
Fits these models
144 more models in the OEM parts diagram, unverified
- Appears in the OEM parts diagram for Briggs & Stratton 1695090
- Appears in the OEM parts diagram for Briggs & Stratton 1695091
- Appears in the OEM parts diagram for Briggs & Stratton 1695367
- Appears in the OEM parts diagram for Briggs & Stratton 1695368
- Appears in the OEM parts diagram for Briggs & Stratton 1695369
- Appears in the OEM parts diagram for Briggs & Stratton 1695370
- Appears in the OEM parts diagram for Briggs & Stratton 1695373
- Appears in the OEM parts diagram for Briggs & Stratton 1695374
- Appears in the OEM parts diagram for Briggs & Stratton 1695378
- Appears in the OEM parts diagram for Briggs & Stratton 1695385
- Appears in the OEM parts diagram for Briggs & Stratton 1695386
- Appears in the OEM parts diagram for Briggs & Stratton 1695420
- Appears in the OEM parts diagram for Briggs & Stratton 1695426
- Appears in the OEM parts diagram for Briggs & Stratton 1695430
- Appears in the OEM parts diagram for Briggs & Stratton 1695436
- Appears in the OEM parts diagram for Briggs & Stratton 1695445
- Appears in the OEM parts diagram for Briggs & Stratton 1695468
- Appears in the OEM parts diagram for Briggs & Stratton 1695514
- Appears in the OEM parts diagram for Briggs & Stratton 1695517
- Appears in the OEM parts diagram for Briggs & Stratton 1695518
- Appears in the OEM parts diagram for Briggs & Stratton 1695519
- Appears in the OEM parts diagram for Briggs & Stratton 1695520
- Appears in the OEM parts diagram for Briggs & Stratton 1695521
- Appears in the OEM parts diagram for Briggs & Stratton 1695522
- Appears in the OEM parts diagram for Briggs & Stratton 1695537
- Appears in the OEM parts diagram for Briggs & Stratton 1695538
- Appears in the OEM parts diagram for Briggs & Stratton 1695543
- Appears in the OEM parts diagram for Briggs & Stratton 1695556
- Appears in the OEM parts diagram for Briggs & Stratton 1695564
- Appears in the OEM parts diagram for Briggs & Stratton 1695565
- Appears in the OEM parts diagram for Briggs & Stratton 1695568
- Appears in the OEM parts diagram for Briggs & Stratton 1695699
- Appears in the OEM parts diagram for Briggs & Stratton 1695701
- Appears in the OEM parts diagram for Briggs & Stratton 1695716
- Appears in the OEM parts diagram for Briggs & Stratton 1695717
- Appears in the OEM parts diagram for Briggs & Stratton 1695752
- Appears in the OEM parts diagram for Briggs & Stratton 1695771
- Appears in the OEM parts diagram for Briggs & Stratton 1695772
- Appears in the OEM parts diagram for Briggs & Stratton 1695869
- Appears in the OEM parts diagram for Briggs & Stratton 1696031
- Appears in the OEM parts diagram for Briggs & Stratton 1696036
- Appears in the OEM parts diagram for Briggs & Stratton 1696037
- Appears in the OEM parts diagram for Briggs & Stratton 1696056
- Appears in the OEM parts diagram for Briggs & Stratton 1696230-00
- Appears in the OEM parts diagram for Briggs & Stratton 1696392-00
- Appears in the OEM parts diagram for Briggs & Stratton 1696485-00
- Appears in the OEM parts diagram for Briggs & Stratton 18-2816-47
- Appears in the OEM parts diagram for Briggs & Stratton 18-2829-31
- Appears in the OEM parts diagram for Briggs & Stratton 18-2847-30
- Appears in the OEM parts diagram for Briggs & Stratton 18-2847-31
- Appears in the OEM parts diagram for Briggs & Stratton 5021E
- Appears in the OEM parts diagram for Briggs & Stratton 5021R
- Appears in the OEM parts diagram for Briggs & Stratton 5022E
- Appears in the OEM parts diagram for Briggs & Stratton 5022EX
- Appears in the OEM parts diagram for Briggs & Stratton 521E
- Appears in the OEM parts diagram for Briggs & Stratton 521SSE
- Appears in the OEM parts diagram for Briggs & Stratton 521SSR
- Appears in the OEM parts diagram for Briggs & Stratton 522E
- Appears in the OEM parts diagram for Briggs & Stratton 522EX
- Appears in the OEM parts diagram for Briggs & Stratton 536.881510
Plus 84 more models. Text your model and serial number below and we confirm the exact fit.
Details
Briggs & Stratton OEM hex nut with lock feature (part number 71391MA). This hardware fastener is used to secure components on small engines and equipment. Confirm your specific engine or equipment model before ordering, as fitment varies — see the verified fitment list on this page.
Verify your fitment before you order
Text your equipment model and serial number to (601) 516-7255 and we confirm the exact part before you pay. Prefer to talk? Call (601) 516-7255.
Questions about part 71391MA
What machines does part 71391MA fit?
We do not list a confirmed fitment for part 71391MA on this page. Send the model and serial number of your machine to the parts desk and we will check it before you order.
How much is part 71391MA?
Dykes Motors sells the NUT.31-18 Hex Ctrlk, part number 71391MA, for $24.23. Price and availability were checked Oct 8, 2026.
Is part 71391MA a genuine Briggs & Stratton part?
Yes. Part 71391MA is a genuine Briggs & Stratton OEM part.
Is part 71391MA in stock?
Yes. It is in stock to order online, or you can pick it up at our store.
Visit Us in Collins, MS
3069 Hwy 49, Collins, MS 39428 · (601) 516-7255 · Get directions



