Delron Inserts D1835 Series — NAS 1835 Equivalent
Style Selection
All styles feature .032 inch minimum radial float.
Table 1
| Size | Thread Size Per MIL-S-8879 | A Head Dia. | B Dia. | C | D Dia. | J | L <4> Min. |
| 08 | .1640-32 UNJC | .685 | .403 | .16 | .535 | .500 | .37 |
| 3 | .1900-32 UNJF | .685 | .403 | .16 | .535 | .500 | .43 |
| 4 | .2500-28 UNJF | .748 | .570 | .18 | .725 | .591 | .56 |
| 5 | .3125-24 UNJF | .810 | .617 | .20 | .790 | .655 | .75 |
| 6 | .3750-24 UNJF | .873 | .700 | .22 | .855 | .718 | .81 |
Notes:
- Burrs caused by machining of potting holes or slots permissible under flange.
- Adhesive backed installation tab, D1837, shall be furnished with each insert. See page 44.
- Plated or solid film lubricant is recommended on self-locking CRES inserts.
<4> Maximum bolt engagement should not exceed “L” minus .060. See Table 1.
<5> Self-locking, 303 CRES inserts without plating or lubricant will be tested using a silver plated bolt or
screw.
- Tolerances, unless otherwise specified: .xxx ± .010; Angles ± 2°.
Typical Assembly
Typical Series D1835 Floating Nut Insert (NAS 1835 equivalent); installed in honeycomb sandwich panel. Insert is held in
place by a cured epoxy compound.
Note: For installation and tooling information, see pages 44 and 45.
Part Number Selection
Consult Rosán for availability of optional materials, finishes and sizes.
Example:
Materials and Finishes
| Carbon Steel | Per ASTM-A-108 or FED STD 66, Ultimate Tensile Strength of 85 KSI, Minimum. Cadmium Plate per QQ-P-416, Type II, Class 2. |
| Aluminum | Housing: 2024-T4 or T351 Aluminum Alloy per QQ-A-225/6, Anodize per MIL-A-8625, Type I. Cap: 3003H14 Aluminum Alloy per QQ-A-250/2, Anodize per MIL-A-8625 Type I. |
| CRES | 303 CRES per ASTM-A-582, Passivate per QQ-P-35,Type II. |