NAS1223 through NAS1235 self-locking shear bolts
Close-tolerance hex head shear bolts with a locking element in the thread, in alloy steel or A286, #10-32 UNJF-3A and up.
NAS1223–NAS1235, machined to the standard.
NAS1223 through NAS1235 is the self-locking (and nonlocking) hex head shear bolt. The base number is alloy steel, cadmium plated; a C after the number is A286. The last two digits give the diameter in sixteenths (NAS1223 is #10-32, NAS1224 is 1/4-28, NAS1226 is 3/8-24) and the dash number the grip. Locking-element suffixes select the locking type.
- Machined from certified bar to the standard; no hot heading
- AS9100D and ISO 9001:2015 quality system; CAGE 8HH90
- DFARS-compliant material available on request
- No minimum quantity; prototype through production
- Material test reports and certificates of conformance with the order
Send the full part number with the dash number and code letters, the quantity, the required delivery and the documentation your purchase order calls for.
NAS1223–NAS1235 at a glance
| Detail | Specification |
|---|---|
| Standard | NAS1223 thru NAS1235 (listed current) |
| Title | Bolt, Shear, Hexagon Head, Self-Locking |
| Material | Alloy steel (4140, 4340, 8740 and others per the sheet), cadmium plated; A286 (C) |
| Thread | UNJF-3A, from #10-32 |
| Head | Low-profile hex head |
| Typical use | Airframe shear joints where the bolt must carry its own locking feature |
Part numbers covered: NAS1223 through NAS1235. Reference only; the current revision of the standard on your order governs.
Reading the part number.
| Element | Meaning |
|---|---|
| NAS12xx | Diameter in sixteenths: 23 = #10, 24 = 1/4, 26 = 3/8, 30 = 5/8 |
| C | A286 material |
| Dash number | Grip in 1/16 in. increments |
| L / N | Locking element type |
How Cyclone makes them
Bar stock certified to the material specification is cut, turned and threaded to the standard’s dimensions, with drilled heads or shanks and head markings as the part number requires. Plating and locking elements are applied through partner facilities to the standard.
Lead time
Quoted on each order. Because the parts are machined from bar rather than scheduled through a heading run, lead time is set by machining capacity and material availability. Ask for the current lead time with your RFQ.
Quality
Cyclone’s published certifications include AS9100D, AS9120B, ISO 9001:2015, API Spec Q1, API 20E and API 20F. See quality and certifications.
Documentation
Material test reports and certificates of conformance ship with the order. Additional inspection reports and documentation are quoted to the purchase order.
Questions before you quote
Is the locking element applied at Cyclone?
The locking element is applied to the finished bolt to the standard; Cyclone coordinates it with the plating and locking-element processors on the order.
Does Cyclone stock these?
No. Every part is made to order from certified bar, which is why there is no minimum quantity and why the quote confirms sizes and lead time.
Can you quote a cancelled or superseded number?
Yes. Many MS sheets were reissued as NASM or SAE AS standards with the part numbers unchanged. Send the number on your drawing and the quote names the current document.