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400 S, SE Series

Delron Inserts 400 S, SE Series –
Snap-In

Style Selection

Notes:

  1. Burrs permissible at knurled areas and on underside of head around potting slots.
  2.  Plated or lubed bolts are recommended for use with self-locking cres
  3. 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:

  1.  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
  1. 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

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