NAS1831 Standoffs & Spacers
Show example part numbers
| Product Specification | Material & Finish code | Material & Finish name | Diameter code | Hex (W) | Thread code | Thread | Thread depth (B) | Length code (L) | Length value |
|---|---|---|---|---|---|---|---|---|---|
| NAS1831 | A | Aluminum Alloy, Anodic coated | 3 | 3/16 (0.188) | A | .0860-56UNC-2B | 3/16 (0.188) | 02-80 | 2/16 (0.125) – 80/16 (5.000) |
| AC | Aluminum Alloy, Chemical Conversion | 4 | 1/4 (0.250) | B | .1120-40UNC-2B | 1/4 (0.250) | Longer lengths available | ||
| B | Brass, Cadmium Plated | 5 | 5/16 (0.313) | C | .1380-32UNC-2B | 3/8 (0.375) | |||
| BT | Brass, Tin Plated | 6 | 3/8 (0.375) | D | .1640-32UNC-2B | 7/16 (0.438) | |||
| C | Corrosion Resistant Steel, Passivated | E | .1900-32UNF-2B | 1/2 (0.500) | |||||
| H | Nylon | ||||||||
| – | Steel, Cadmium Plated |
- DIMENSIONS ARE IN INCHES AND APPLY AFTER FINISH UNLESS OTHERWISE SPECIFIED.
- THREADS PER MIL-S-7742, CLASS 2B (UNC OR UNF). COUNTERSINK FOR THREAD RELIEF TO MAXIMUM MAJOR THREAD DIAMETER +.020/ -.000.
- REMOVE ALL BURRS AND SHARP EDGES.
- MAXIMUM DEPTH OF TAP DRILL HOLE IS OPTIONAL. POSTS MAY BE THREADED THEIR ENTIRE LENGTH.
- DIMENSIONING AND TOLERANCING PER ANSI Y14.SM-1982.
- UNLESS OTHERWISE SPECIFIED, PART INVENTORY MANUFACTURED TO PREVIOUS REVISIONS OF THE APPLICABLE DRAWING OR SPECIFICATION MAY BE PROCURED AND USED UNTIL STOCK IS DEPLETED.
- THIS STANDARD TAKES PRECEDENCE OVER DOCUMENTS REFERENCED HEREIN.
- REFERENCED DOCUMENTS SHALL BE THE ISSUE IN EFFECT ON DATE OF INVITATIONS FOR BID.
- THREAD DEPTH – WHEN OVERALL LENGTH ‘L’ PERMITS.
| Revision | [3] Date: 06/10/10 (latest revision is [2] material specification is not commercially available) |
| Description | Post, electrical, mechanical equipment |
| Keywords | Spacer, Standoff, NAS1831 |
| Applications | Electronics, Aviation, Civil, Military |
CERTIFICATIONS
- DFARS (C, – )
- Certificate of Compliance
- Material
- Finish
- Other on request
