ALL DIMENSIONS IN INCHES
NOTE: * ,Only for size 2-56 is 82°
THREAD SIZE C max
* 2-56 UNC-2A
4-40 UNC-2A
6-32 UNC-2A
8-32 UNC-2A
10-24 UNC-2A
10-32 UNF-2A
1/4-20 UNC-2A
0.172"
0.225"
0.279"
0.332"
0.385"
0.385"
0.507"
Head
RECOM. CLEAR. HOLE
driver size
MIN.
MAX.
LENGTH
1/4" TO 1" Incl.
1/4" TO 1" Incl.
1/4" TO 1" Incl.
1/4" TO 1" Incl.
5/16" TO 1" Incl.
5/16" TO 1" Incl.
3/8" TO 1 1/4" Incl.
TYPICAL CLEARANCE HOLE DETAIL
#1
#1
#1
#2
#2
#2
#3
0.091"
0.125"
0.147"
0.173"
0.199"
0.199"
0.265"
0.095"
0.129"
0.152"
0.179"
0.204"
0.204"
0.269"
STANDARD SPECIFICATIONS & COMMON OPTIONS (HOW TO ORDER)
STD. SCREW MATERIAL: TYPE 18/8 STAINLESS STEEL PER DFARS (OTHER MATERIALS AVAILABLE)
STD. SCREW FINISH: NATURAL (PASSIVATED PER MIL-STD-171 UNLESS OTHERWISE SPECIFIED)
STD. O-RING MATERIAL: SILICONE RUBBER (SEE TABLE FOR O-RING OPTIONS)
AVAILABLE O-RING MATERIALS
COMMON OPTIONS
SAMPLE CATALOG
Service
Compound
SFR4-40X1/4-2701-BLKOX
Material
SUFFIX
DESCRIPTION
NO.
Temp.
Suffix
BLACK OXIDE PER
Silicone
-150°F to 500°F
FLAT HEAD WITH
-2701
-BLKOX
MIL-C-13924A,
Rubber
-101°C to 260°C
SCREW TYPE
SFR
C'SUNK RECESS
CLASS 2
Fluoro-
-78°F to 450°F
LOCKING NYLON
-2615
Silicone
-NY
-61°C to 232°C
ENTER BASIC
PELLET
Rubber
THREAD
4-40
THREAD SIZE
-20°F to 400°F
LOCKING NYLON
-5701
Viton
A
-LY
-29°C to 204°C
STRIP
X
Buna N
-65°F to 250°F
LOCKING NYLON
-4601
-TP
(NBR)
-54°C to 121°C
STD. PATCH
LENGTH
1/4
ENTER LENGTH
Neoprene -65°F to 300°F
HIGH TEMP.
-3701
(EPR)
-HTP
LOCKING NYLON
-54°C to 149°C
O-RING SUFFIX -2701
ENTER FROM TABLE
PATCH
Ethylene
Propylene -65°F to 300°F
-7601
-54°C to 149°C
OPTIONS
-BLKOX ENTER FROM TABLE
(EPDM)
M
L
K
J
REV.
CHANGED HEAD DRIVER SIZE OF 6-32 from #2 to #1
ADDED "PER DFARS" FOR THE SCREW MATERIAL
NEW DRAWING FORMAT
CAD COMPUTER GENERATED
DESCRIPTION
S. GOK
S. GOK
S. GOK
M.M.
J.P.
DWG. NO.
MAT'L: AS NOTED
FINISH: AS NOTED
TITLE:
MAXIMUM AND MINIMUM MEASURE-
MENTS ARE STATED DIRECTLY ON
EACH DIMENSION.
SEELSKREW
FLATHEAD
ENG.
DWN.
C'SUNK, RECESSED
CHKD.
SCALE
01.27.10
07.02.09
01.21.09
12.23.02
DATE
10.24.58
10.24.58
APM-HEXSEAL CORPORATION
SFR-0000-00-00
THIS DRAWING COVERS PROPRIETARY ITEM AND IS THE PROPERTY OF THE APM-HEXSEAL CORPORATION.
THIS DRAWING IS NOT TO BE COPIED OR USED WITHOUT THE WRITTEN APPROVAL OF AN OFFICER OF THE APM-HEXSEAL CORPORATION.