Self-Clinching Nuts - Types SP, SMPP - Unified On Aero-Space Fasteners and Electronics, Inc.

Self-clinching nuts are installed by placing them in properly sized holes in sheets and applying a parallel squeezing force to the head of the nut. The sheet metal surrounding the head cold flows into an undercut thereby making the fastener an integral part of the sheet. A serrated clinching ring prevents the fastener from rotating after installation.

Type S, SS, CLS, and CLSS nuts provide load-bearing threads in thin sheets with high pushout and torque-out resistance.

Type SP, PEM 300® nuts provide strong load-bearing threads in stainless steel sheets as thin as .030”.

Part #	Thread Size	A (Shank) Max.	Hole Size in Sheet + .003 - .000	E ± .010	Fastener Material	Standard Finish	CAD
SP-440-0	N/A .112-40 (#4-40)	N/A .030 in	N/A .166 in	N/A .250 in	N/A Age Hardened A286 Stainless Steel	N/A Passivated and/or tested per ASTM A380	N/A
SP-632-0	N/A .138-32 (#6-32)	N/A .030 in	N/A .1875 in	N/A .280 in	N/A Age Hardened A286 Stainless Steel	N/A Passivated and/or tested per ASTM A380	N/A
SP-832-0	N/A .164-32 (#8-32)	N/A .030 in	N/A .213 in	N/A .310 in	N/A Age Hardened A286 Stainless Steel	N/A Passivated and/or tested per ASTM A380	N/A
SP-032-0	N/A .190-32 (#10-32)	N/A .030 in	N/A .250 in	N/A .340 in	N/A Age Hardened A286 Stainless Steel	N/A Passivated and/or tested per ASTM A380	N/A
SP-0420-0	N/A .250-20 (1/4-20)	N/A .045 in	N/A .344 in	N/A .440 in	N/A Age Hardened A286 Stainless Steel	N/A Passivated and/or tested per ASTM A380	N/A
SP-440-1	N/A .112-40 (#4-40)	N/A 0.038 in	N/A .166 in	N/A .250 in	N/A Age Hardened A286 Stainless Steel	N/A Passivated and/or tested per ASTM A380	N/A
SP-632-1	N/A .138-32 (#6-32)	N/A 0.038 in	N/A .1875 in	N/A .280 in	N/A Age Hardened A286 Stainless Steel	N/A Passivated and/or tested per ASTM A380	N/A
SP-832-1	N/A .164-32 (#8-32)	N/A 0.038 in	N/A .213 in	N/A .310 in	N/A Age Hardened A286 Stainless Steel	N/A Passivated and/or tested per ASTM A380	N/A
SP-032-1	N/A .190-32 (#10-32)	N/A 0.038 in	N/A .250 in	N/A .340 in	N/A Age Hardened A286 Stainless Steel	N/A Passivated and/or tested per ASTM A380	N/A
SP-0420-1	N/A .250-20 (1/4-20)	N/A .054 in	N/A .344 in	N/A .440 in	N/A Age Hardened A286 Stainless Steel	N/A Passivated and/or tested per ASTM A380	N/A
SP-0518-1	N/A .313-18 (5/16-18)	N/A .054 in	N/A .413 in	N/A .500 in	N/A Age Hardened A286 Stainless Steel	N/A Passivated and/or tested per ASTM A380	N/A
SP-440-2	N/A .112-40 (#4-40)	N/A .054 in	N/A .166 in	N/A .250 in	N/A Age Hardened A286 Stainless Steel	N/A Passivated and/or tested per ASTM A380	N/A
SP-632-2	N/A .138-32 (#6-32)	N/A .054 in	N/A .1875 in	N/A .280 in	N/A Age Hardened A286 Stainless Steel	N/A Passivated and/or tested per ASTM A380	N/A
SP-832-2	N/A .164-32 (#8-32)	N/A .054 in	N/A .213 in	N/A .310 in	N/A Age Hardened A286 Stainless Steel	N/A Passivated and/or tested per ASTM A380	N/A
SP-032-2	N/A .190-32 (#10-32)	N/A .054 in	N/A .250 in	N/A .340 in	N/A Age Hardened A286 Stainless Steel	N/A Passivated and/or tested per ASTM A380	N/A
SP-0420-2	N/A .250-20 (1/4-20)	N/A .087 in	N/A .344 in	N/A .440 in	N/A Age Hardened A286 Stainless Steel	N/A Passivated and/or tested per ASTM A380	N/A
SP-0518-2	N/A .313-18 (5/16-18)	N/A .087 in	N/A .413 in	N/A .500 in	N/A Age Hardened A286 Stainless Steel	N/A Passivated and/or tested per ASTM A380	N/A
SP-0616-2	N/A .375-16 (3/8-16)	N/A .120 in	N/A .500 in	N/A .560 in	N/A Age Hardened A286 Stainless Steel	N/A Passivated and/or tested per ASTM A380	N/A
SMPP-256	N/A .086-56 (#2-56)	N/A .024 in	N/A .136 in	N/A .220 in	N/A Age hardened A286 Stainless Steel (non-magnetic)	N/A Passivated and/or tested per ASTM A380	N/A
SMPP-440	N/A .112-40 (#4-40)	N/A .024 in	N/A .166 in	N/A .220 in	N/A Age hardened A286 Stainless Steel (non-magnetic)	N/A Passivated and/or tested per ASTM A380	N/A
SMPP-632	N/A .138-32 (#6-32)	N/A .024 in	N/A .187 in	N/A .252 in	N/A Age hardened A286 Stainless Steel (non-magnetic)	N/A Passivated and/or tested per ASTM A380	N/A

SP-440-0

N/A .112-40 (#4-40)

N/A .030 in

N/A .166 in

N/A .250 in

N/A Age Hardened A286 Stainless Steel

N/A Passivated and/or tested per ASTM A380

N/A

SP-632-0

N/A .138-32 (#6-32)

N/A .030 in

N/A .1875 in

N/A .280 in

N/A Age Hardened A286 Stainless Steel

N/A Passivated and/or tested per ASTM A380

N/A

SP-832-0

N/A .164-32 (#8-32)

N/A .030 in

N/A .213 in

N/A .310 in

N/A Age Hardened A286 Stainless Steel

N/A Passivated and/or tested per ASTM A380

N/A

SP-032-0

N/A .190-32 (#10-32)

N/A .030 in

N/A .250 in

N/A .340 in

N/A Age Hardened A286 Stainless Steel

N/A Passivated and/or tested per ASTM A380

N/A

SP-0420-0

N/A .250-20 (1/4-20)

N/A .045 in

N/A .344 in

N/A .440 in

N/A Age Hardened A286 Stainless Steel

N/A Passivated and/or tested per ASTM A380

N/A

SP-440-1

N/A .112-40 (#4-40)

N/A 0.038 in

N/A .166 in

N/A .250 in

N/A Age Hardened A286 Stainless Steel

N/A Passivated and/or tested per ASTM A380

N/A

SP-632-1

N/A .138-32 (#6-32)

N/A 0.038 in

N/A .1875 in

N/A .280 in

N/A Age Hardened A286 Stainless Steel

N/A Passivated and/or tested per ASTM A380

N/A

SP-832-1

N/A .164-32 (#8-32)

N/A 0.038 in

N/A .213 in

N/A .310 in

N/A Age Hardened A286 Stainless Steel

N/A Passivated and/or tested per ASTM A380

N/A

SP-032-1

N/A .190-32 (#10-32)

N/A 0.038 in

N/A .250 in

N/A .340 in

N/A Age Hardened A286 Stainless Steel

N/A Passivated and/or tested per ASTM A380

N/A

SP-0420-1

N/A .250-20 (1/4-20)

N/A .054 in

N/A .344 in

N/A .440 in

N/A Age Hardened A286 Stainless Steel

N/A Passivated and/or tested per ASTM A380

N/A

SP-0518-1

N/A .313-18 (5/16-18)

N/A .054 in

N/A .413 in

N/A .500 in

N/A Age Hardened A286 Stainless Steel

N/A Passivated and/or tested per ASTM A380

N/A

SP-440-2

N/A .112-40 (#4-40)

N/A .054 in

N/A .166 in

N/A .250 in

N/A Age Hardened A286 Stainless Steel

N/A Passivated and/or tested per ASTM A380

N/A

SP-632-2

N/A .138-32 (#6-32)

N/A .054 in

N/A .1875 in

N/A .280 in

N/A Age Hardened A286 Stainless Steel

N/A Passivated and/or tested per ASTM A380

N/A

SP-832-2

N/A .164-32 (#8-32)

N/A .054 in

N/A .213 in

N/A .310 in

N/A Age Hardened A286 Stainless Steel

N/A Passivated and/or tested per ASTM A380

N/A

SP-032-2

N/A .190-32 (#10-32)

N/A .054 in

N/A .250 in

N/A .340 in

N/A Age Hardened A286 Stainless Steel

N/A Passivated and/or tested per ASTM A380

N/A

SP-0420-2

N/A .250-20 (1/4-20)

N/A .087 in

N/A .344 in

N/A .440 in

N/A Age Hardened A286 Stainless Steel

N/A Passivated and/or tested per ASTM A380

N/A

SP-0518-2

N/A .313-18 (5/16-18)

N/A .087 in

N/A .413 in

N/A .500 in

N/A Age Hardened A286 Stainless Steel

N/A Passivated and/or tested per ASTM A380

N/A

SP-0616-2

N/A .375-16 (3/8-16)

N/A .120 in

N/A .500 in

N/A .560 in

N/A Age Hardened A286 Stainless Steel

N/A Passivated and/or tested per ASTM A380

N/A

SMPP-256

N/A .086-56 (#2-56)

N/A .024 in

N/A .136 in

N/A .220 in

N/A Age hardened A286 Stainless Steel (non-magnetic)

N/A Passivated and/or tested per ASTM A380

N/A

SMPP-440

N/A .112-40 (#4-40)

N/A .024 in

N/A .166 in

N/A .220 in

N/A Age hardened A286 Stainless Steel (non-magnetic)

N/A Passivated and/or tested per ASTM A380

N/A

SMPP-632

N/A .138-32 (#6-32)

N/A .024 in

N/A .187 in

N/A .252 in

N/A Age hardened A286 Stainless Steel (non-magnetic)

N/A Passivated and/or tested per ASTM A380

N/A

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