NAS620 at a glance
Where to buy
Specification
| Item | Value |
|---|---|
| Type | Flat washer |
| Material | Carbon steel, corrosion-resistant steel or aluminum alloy |
| Status | Check the current issue before design use. |
Part numbers
Sizes commonly stocked. The standard governs and may list others.
No. 4 (.1120)5 part numbers
| Part no. | Material | Thickness T |
|---|---|---|
| NAS620-4 | Carbon steel | .032 |
| NAS620-4L | Carbon steel | .016 |
| NAS620C4 | Corrosion-resistant steel | .032 |
| NAS620C4L | Corrosion-resistant steel | .016 |
| NAS620A4 | Aluminum alloy | — |
No. 6 (.1380)5 part numbers
| Part no. | Material | Thickness T |
|---|---|---|
| NAS620-6 | Carbon steel | .032 |
| NAS620-6L | Carbon steel | .016 |
| NAS620C6 | Corrosion-resistant steel | .032 |
| NAS620C6L | Corrosion-resistant steel | .016 |
| NAS620A6 | Aluminum alloy | — |
No. 8 (.1640)5 part numbers
| Part no. | Material | Thickness T |
|---|---|---|
| NAS620-8 | Carbon steel | .032 |
| NAS620-8L | Carbon steel | .016 |
| NAS620C8 | Corrosion-resistant steel | .032 |
| NAS620C8L | Corrosion-resistant steel | .016 |
| NAS620A8 | Aluminum alloy | — |
No. 10 (.1900)5 part numbers
| Part no. | Material | Thickness T |
|---|---|---|
| NAS620-10 | Carbon steel | .032 |
| NAS620-10L | Carbon steel | .016 |
| NAS620C10 | Corrosion-resistant steel | .032 |
| NAS620C10L | Corrosion-resistant steel | .016 |
| NAS620A10 | Aluminum alloy | — |
1/4 (.2500)5 part numbers
| Part no. | Material | Thickness T |
|---|---|---|
| NAS620-416 | Carbon steel | .032 |
| NAS620-416L | Carbon steel | .016 |
| NAS620C416 | Corrosion-resistant steel | .032 |
| NAS620C416L | Corrosion-resistant steel | .016 |
| NAS620A416 | Aluminum alloy | — |
Part number
What each code means
| Part | Meaning |
|---|---|
| Example | NAS620-4 — Carbon steel flat washer, .1120 fit size, .032 thick |
Notes from the standard
- Thickness .032, or .016 for the L (light) numbers. For aluminum alloy the listing prints one number per size and does not separate standard and light, so thickness is left blank.
- Part number written as the listing writes it; the standard governs the exact format.
- Approved data governs. Use the washer 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
- NAS620 — Washer, Flat — 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.