NAS43 at a glance
Where to buy
Specification
| Item | Value |
|---|---|
| Type | Spacer |
| Material | DD: finish suffix FC (chemical film) or N (gray anodized); HT: heat-treated alloy steel |
| Status | Check the current issue before design use. |
Part numbers
Part numbers commonly stocked. The standard governs and may list others.
.164 / .19044 part numbers
| Part no. | Length, in | Type |
|---|---|---|
| NAS43DD3-4FC | 1/16 | DD |
| NAS43DD3-5FC | 5/64 | DD |
| NAS43DD3-6FC | 3/32 | DD |
| NAS43DD3-7FC | — | DD |
| NAS43DD3-8FC | 1/8 | DD |
| NAS43DD3-8N | 1/8 | DD |
| NAS43DD3-10FC | 5/32 | DD |
| NAS43DD3-12FC | 3/16 | DD |
| NAS43DD3-12N | 3/16 | DD |
| NAS43DD3-14FC | 7/32 | DD |
| NAS43DD3-15FC | 15/64 | DD |
| NAS43DD3-16FC | 1/4 | DD |
| NAS43DD3-16N | 1/4 | DD |
| NAS43DD3-18FC | 9/32 | DD |
| NAS43DD3-20FC | 5/16 | DD |
| NAS43DD3-22FC | 11/32 | DD |
| NAS43DD3-23FC | 23/64 | DD |
| NAS43DD3-24FC | 3/8 | DD |
| NAS43DD3-24N | 3/8 | DD |
| NAS43DD3-26FC | 13/32 | DD |
| NAS43DD3-28FC | 7/16 | DD |
| NAS43DD3-30FC | 15/32 | DD |
| NAS43DD3-32FC | 1/2 | DD |
| NAS43DD3-32N | 1/2 | DD |
| NAS43DD3-34FC | — | DD |
| NAS43DD3-35FC | 35/64 | DD |
| NAS43DD3-36FC | 9/16 | DD |
| NAS43DD3-38FC | 19/32 | DD |
| NAS43DD3-40FC | 5/8 | DD |
| NAS43DD3-40N | 5/8 | DD |
| NAS43DD3-42FC | 21/32 | DD |
| NAS43DD3-44FC | 11/16 | DD |
| NAS43DD3-48FC | 3/4 | DD |
| NAS43DD3-48N | 3/4 | DD |
| NAS43DD3-52N | 13/16 | DD |
| NAS43DD3-54FC | 27/32 | DD |
| NAS43DD3-56FC | 7/8 | DD |
| NAS43DD3-58FC | 29/32 | DD |
| NAS43DD3-64FC | 1 | DD |
| NAS43DD3-64N | 1 | DD |
| NAS43DD3-80N | 1-1/4 | DD |
| NAS43DD3-96FC | 1-1/2 | DD |
| NAS43DD3-112FC | 1-3/4 | DD |
| NAS43DD3-128FC | 2 | DD |
.25015 part numbers
| Part no. | Length, in | Type |
|---|---|---|
| NAS43DD4-8FC | 1/8 | DD |
| NAS43DD4-10FC | 5/32 | DD |
| NAS43DD4-12FC | 3/16 | DD |
| NAS43DD4-16FC | 1/4 | DD |
| NAS43DD4-20FC | 5/16 | DD |
| NAS43DD4-24FC | 3/8 | DD |
| NAS43DD4-26FC | 13/32 | DD |
| NAS43DD4-28FC | 7/16 | DD |
| NAS43DD4-30FC | 15/32 | DD |
| NAS43DD4-32FC | 1/2 | DD |
| NAS43DD4-36FC | 9/16 | DD |
| NAS43DD4-40FC | 5/8 | DD |
| NAS43DD4-42FC | 21/32 | DD |
| NAS43DD4-48FC | 3/4 | DD |
| NAS43DD4-64FC | 1 | DD |
Size not listed18 part numbers
| Part no. | Length, in | Type |
|---|---|---|
| NAS43HT0-8 | 1/8 | HT |
| NAS43HT3-24 | 3/8 | HT |
| NAS43HT3-8 | 1/8 | HT |
| NAS43HT3-216 | 3-3/8 | HT |
| NAS43HT3-10 | 10/64 | HT |
| NAS43HT3-32 | 1/2 | HT |
| NAS43HT3-12 | 3/16 | HT |
| NAS43HT3-48 | 3/4 | HT |
| NAS43HT3-14 | 7/32 | HT |
| NAS43HT4-6 | 3/32 | HT |
| NAS43HT3-16 | 1/4 | HT |
| NAS43HT4-8 | 1/8 | HT |
| NAS43HT3-18 | 9/32 | HT |
| NAS43HT4-10 | 10/64 | HT |
| NAS43HT3-20 | 5/16 | HT |
| NAS43HT4-12 | 3/16 | HT |
| NAS43HT3-22 | 11/32 | HT |
| NAS43HT4-16 | 1/4 | HT |
Part number
What each code means
| Part | Meaning |
|---|---|
| Format | NAS43<type><dash> |
| DD | Type: Spacer, finish by suffix: FC chemical film, N gray anodized |
| HT | Type: Spacer, heat-treated alloy steel |
| Example | NAS43DD3-8FC — Type DD, for #8 and #10 screws, 1/8 in long, chemical film finish |
Notes from the standard
- DD3 spacers are for #8 and #10 screws (diameters .164 and .190); DD4 spacers are for .250. Size column gives those diameters, in inches.
- In DD numbers the code before the finish letters is the length in 64ths of an inch, as listed.
- Lengths printed in the listing that do not agree with that rule are left blank rather than guessed (NAS43DD3-7FC and NAS43DD3-34FC).
- HT numbers are as listed: the first digit is the type and the rest the length code; confirm the dimensions in the standard.
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
- NAS43 — Spacer, Sleeve (types DD and HT) — 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.