NAS1994 at a glance
Where to buy
Specification
| Item | Value |
|---|---|
| Type | 100° reduced head bolt |
| Status | Check the current issue before design use. |
Dimensions by size
| Dimension, in | .2500-28 |
|---|---|
| Thread | .2500-28 |
Thread as stated for the standard. Head and shank dimensions are not shown here: take them from the standard.
Part numbers
Part numbers commonly stocked, with grip and length. The standard governs and may list others.
.2500-288 part numbers
| Part no. | Grip, in | Length, in |
|---|---|---|
| NAS1994-2T | .125 | .550 |
| NAS1994-C2T | .125 | .550 |
| NAS1994-3T | .188 | .613 |
| NAS1994-C3T | .188 | .613 |
| NAS1994-4T | .250 | .675 |
| NAS1994-C4T | .250 | .675 |
| NAS1994-C4PT | .250 | .675 |
| NAS1994-5T | .312 | .737 |
Part number
What each code means
| Part | Meaning |
|---|---|
| Format | NAS1994-<dash> |
| C | Suffix: Corrosion resistant |
| P | Suffix: Aluminum coating |
| Example | NAS1994-2T — 100° reduced head bolt, .2500-28 thread, grip .125, length .550 |
Notes from the standard
- T: Torq-Set recess. Add C for corrosion resistant; add P for aluminum coating.
- Part number format as commonly written; check the standard for the exact format.
- Approved data governs. Use the bolt the SRM, drawing or IPC calls for.
Where to buy
AmericaDistributor coming soonOur partner for this region is on its way
EuropeDistributor coming soonOur partner for this region is on its way
OceaniaDistributor coming soonOur partner for this region is on its way
Distributors coming soon.
Sources
- NAS1994 — Bolt, 100° Reduced Head, Torq-Set Recess — nominal sizes and part numbers.
Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.