SEELSKREW

®

High-pressure, self-sealing screws

Recom. Clear. Hole‡

THREAD SIZE

LENGTHS*

C MAX.

D MAX.

MIN.

MAX.

2-56UNC-2A

1/4" to 5/8" incl.

.168"

.055"

.091"

.095"

3-56UNF-2A

1/4" to 5/8" incl.

.194"

.063"

.109"

.113"

3-48UNC-2A

1/4" to 5/8" incl.

.194"

.063"

.109"

.113"

4-40UNC-2A

1/4" to 1" incl.

.220"

.069"

.125"

.129"

5-40UNC-2A

1/4" to 1" incl.

.245"

.075"

.140"

.144"

6-32UNC-2A

1/4" to 1" incl.

.271"

.083"

.147"

.152"

8-32UNC-2A

1/4" to 1" incl.

.323"

.097"

.173"

.179"

10-32UNF-2A

1/4" to 1" incl.

.374"

.113"

.199"

.204"

10-24UNC-2A

1/4" to 1" incl.

.374"

.113"

.199"

.204"

1/4-20UNC-2A

5/16" to 11/4" incl.

.493"

.148"

.265"

.269"

STANDARD PAN HEAD (available from stock)

TYPE S SLOTTED

LENGTHS

Recom. Clear. Hole‡

THREAD SIZE

in increments of 1/8"

C MAX.

D MAX.

MIN.

MAX.

4-40UNC-2A

1/4" to 1" incl.

.245"

.075"

.144"

.148"

6-32UNC-2A

1/4" to 1" incl.

.296"

.089"

.171"

.175"

8-32UNC-2A

1/4" to 1" incl.

.373"

.112"

.201"

.205"

10-32UNF-2A

1/4" to 1" incl.

.425"

.125"

.257"

.261"

10-24UNC-2A

1/4" to 1" incl.

.425"

.125"

.257"

.261"

OVERSIZED PAN HEAD (on special order only)

TYPE SL OVERSIZED

Recom. Clear. Hole‡

THREAD SIZE

LENGTHS

C MAX.

D MAX.

MIN.

MAX.

inch

mm

inch

mm

inch

mm

inch

mm

mm

4, 8, 12

M2

.167

4.24

.054

1.37

.091

2.31

.095

2.41

inch

.157, .315, .472

mm

6, 12, 20

M3

.245

6.22

.075

1.90

.140

3.55

.144

3.65

inch

.236, .472, .787

mm

6, 12, 20

M4

.322

8.17

.096

2.43

.173

4.39

.179

4.54

inch

.236, .472, .787

mm

12, 20, 25

M6

.492

12.49

.147

3.73

.265

6.73

.269

6.83

inch

.472, .787, .984

METRIC PAN HEAD (available from stock)

TYPE SM SLOTTED

Recom. Clear. Hole‡

THREAD SIZE

LENGTHS*

C MAX.

D MAX.

MIN.

MAX.

2-56UNC-2A

1/4" to 1" incl.

.181"

.062"

.091"

.095"

4-40UNC-2A

1/4" to 1" incl.

.238"

.080"

.125"

.129"

6-32UNC-2A

1/4" to 1" incl.

.294"

.097"

.147"

.152"

8-32UNC-2A

1/4" to 1" incl.

.347"

.115"

.173"

.179"

10-32UNF-2A

3/8" to 1" incl.

.403"

.133"

.199"

.204"

10-24UNC-2A

3/8" to 1" incl.

.403"

.133"

.199"

.204"

1/4-20UNC-2A

3/8" to 11/4" incl.

.517"

.175"

.265"

.269"

STANDARD PAN HEAD (available from stock) TYPE R PHILLIPS RECESSED

Recom. Clear. Hole‡

THREAD SIZE

LENGTHS*

C MAX.

MIN.

MAX.

2-56UNC-2A**

1/4" to 1" incl.

.172"

.091

.095"

4-40UNC-2A

1/4" to 1" incl.

.225"

.125"

.129"

6-32UNC-2A

1/4" to 1" incl.

.279"

.147"

.152"

8-32UNC-2A

1/4" to 1" incl.

.332"

.173"

.179"

10-24UNF-2A

5/16" to 1" incl.

.385"

.199"

.204"

10-32UNC-2A

5/16" to 1" incl.

.385"

.199"

.204"

1/4-20UNC-2A

3/8" to 11/4" incl.

.507"

.265"

.269"

FLAT HEAD (available from stock)

TYPE SFR PHILLIPS RECESSED

TYPE S SLOTTED

TYPE SL OVERSIZED SLOTTED

TYPE SM METRIC SLOTTED

TYPE R PHILLIPS RECESSED (MEETS

REQUIREMENTS OF MS 3212 & MS 3213)

TYPE SFR PHILLIPS RECESSED

*In increments of 1/16" up to 5/8" long; from 5/8" long and up, in increments of 1/8".

Tolerance up to 1" length + 0 – 1/32; 1" to 2" + 0 – 1/16. **82° countersink.

‡To assure maximum sealing performance of SEELSKREWS®

a clearance hole must be used. Consult factory for additional sizes.

Oversized Head SEELSKREWS® are only for those applications where extra large

clearance holes are required. Consult factory for additional sizes.

TYPE RM PHILLIPS RECESSED

SEELSKREWS® are designed to seal out air, water, lubricants and other liquid or gaseous contaminants. SEELSKREWS® are available in many

standard thread sizes and with optional sealing materials. They can also be supplied with either NYLOK® self-locking Aero-Patch™ or Aero-Pellet™,

a black oxide, painted heads, or in a captivated (KAPTO-SKREW®) configuration. Sheet metal and other type fasteners available on special order.

Recom. Clear. Hole‡

THREAD SIZE

LENGTHS

C MAX.

D MAX.

MIN.

MAX.

inch

mm

inch

mm

inch

mm

inch

mm

mm

4, 8, 12

M2

.167

4.24

.062

1.57

.091

2.31

.095

2.41

inch

.157, .315, .472

mm

6, 12, 20

M3

.263

6.68

.089

2.26

.140

3.55

.144

3.65

inch

.236, .472, .787

mm

6, 12, 20

M4

.322

8.17

.115

2.92

.173

4.39

.179

4.54

inch

.236, .472, .787

mm

12, 20, 25

M6

.492

12.49

.175

4.44

.265

6.73

.269

6.83

inch

.472, .787, .984

METRIC PAN HEAD (on special order only) TYPE RM PHILLIPS RECESSED

3

Consult factory for additional sizes.

Consult factory for additional sizes.

Consult factory for additional sizes.

Consult factory for additional sizes.

Visit our website for downloadable CAD drawings:

www.apmhexseal.com