Delron Inserts 400 S, SE Series –
Snap-In
Style Selection
Notes:
- Burrs permissible at knurled areas and on underside of head around potting slots.
- Plated or lubed bolts are recommended for use with self-locking cres
- Tolerances, unless otherwise specified: .xxx ± .010; Angles 1 2°.
Table I
Size | Thread Size Per MIL-S-8879 | A Head Dia. | B Flange Dia. | C Body Dia. | D |
440 | .1120-40 UNJC-3B | .375 | .312 | .195 | .165* |
632 | .1380-32 UNJC-3B | .437 | .375 | .230 | .175* |
832 | .1640-32 UNJC-3B | .500 | .437 | .290 | .185* |
1032 | .1900-32 UNJF-3B | .500 | .437 | .290 | .185* |
428 | .2500-28 UNJF-3B | .562 | .500 | .353 | .190 |
524 | .3125-24 UNJF-3B | .687 | .625 | .460 | .200 |
624 | .3750-24 UNJF-3B | .812 | .687 | .550 | .200 |
*Reduce “D” dimension by 0.30 inch when ordering -04 lengths in sizes 440 thru 1032.
Part Number Selection
Consult Rosá for availability of optional materials, finishes and sizes.
Example:
Typical Assembly
Typical Series 400 S, SE Snap-In Insert; 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.
Length and Skin Thickness Dash Number Selection
Select Length Dash Number from Tables 2 based on the minimum full thread length required by the application. Insert
length “L” must be a minimum of .040” less than depth of panel core (See Fig. 1).
Examples:
- Requirements: 440 Size Crimp Lock Thread, Carbon Steel, Slotted Head, Minimum Full Thread Length of .200, for a
panel with a skin thickness of .035, and an overall panel thickness of .410. From tables
select:Length /-06 Skin/-3 P/N = 495 SE 440-06-3
- Requirements: 624 Size Helical Coil Lock, Aluminum Alloy, Non-Slotted Head, Minimum Full Thread Length of .400,
for a panel with skin thickness of .060, and an overall panel thickness of 035. From tables
select: Length/-16 Skin/-6 P/N = 406 S 624-16-6
Fig. 1
Minimum clearance is required between bottom of insert and inside panel skin for proper epoxy bonding around bottom of
insert.
Tables 2
All Thread Types Except Helical Coil Lock
Length Dash Number | L | Thread Size | ||||||
440 | 632 | 832 | 1032 | 428 | 524 | 624 | ||
-04*† | .220 | .170 | .170 | .170 | .170 | — | — | — |
-05* | .285 | .190 | .190 | .190 | .190 | .235 | — | — |
-06* | .335 | .225 | .235 | .235 | .235 | .250 | — | — |
-07 | .395 | .250 | .280 | .280 | .280 | .250 | — | — |
-08 | .455 | .250 | .280 | .330 | .330 | .330 | .320 | — |
-10 | .565 | .250 | .280 | .330 | .380 | .420 | .430 | .425 |
-12 | .690 | .250 | .280 | .330 | .380 | .500 | .550 | .550 |
-14 | .815 | .250 | .280 | .330 | .380 | .500 | .625 | .750 |
-16 | .935 | .250 | .280 | .330 | .380 | .500 | .625 | .750 |
*Close out disc required to provide minimum full thread. † Available in -1, -2 and -3 skin thicknesses only; see
Table 3 below.
Helical Coil Lock Types
Length Dash Number | L | Thread Size | ||||||
440 | 632 | 832 | 1032 | 428 | 524 | 624 | ||
-06 | .335 | .112 | — | — | — | — | — | — |
-07 | .395 | .168 | .138 | — | — | — | — | — |
-08 | .455 | .224 | .207 | .164 | .190 | — | — | — |
-10 | .565 | .224 | .276 | .246 | .285 | .250 | — | — |
-12 | .690 | .224 | .276 | .328 | .380 | .375 | .312 | — |
-14 | .815 | .224 | .276 | .328 | .380 | .500 | .469 | .375 |
-16 | .935 | .224 | .276 | .328 | .380 | .500 | .469 | .562 |
Tables 3
Skin Dash Number | T |
-1 | .010-.019 |
-2 | .020-.029 |
-3 | .030-.039 |
-4 | .040-.049 |
-5 | .050-.059 |
-6 | .060-.069 |