CLINCHING SCREW – FLUSH HEAD STUDS
FH / FHS / FHA ALTERNATIVE
Flush-head for sheet thickness of .040″/1 mm and greater.
FH studs are recommended for use in steel or aluminum sheets HBB (Rockwell”B” scale) 80 / HB (Hardness Brinell) 150 or less; FHS studs are recommended for use in steel or aluminum sheets HRB (Rockwell”B” scale) 70 / HB (Hardness Brinell) 125 or less; FHA studs are recommended for use in aluminum sheets HRB (Rockwell “B” scale) 50 / HB (Hardness Brinell) 82 or less.
CODE | SPEC (THREAD DIA) | SPEC (LENGTH) | MIN SHEET THICKNESS | HOLE SIZE | HEAD HEIGHT | MATERIAL | |
| STFH / STFHS / STFHA | #2 | 0.25/0.312/0.375/0.500/0.625/0.750 | 0.040 | 0.085 | 0.144 | FH = STEEL ; FHS = STAINLESS STEEL ; FHA = ALUMINUM | |
| STFH / STFHS / STFHA | #4 | 0.25/0.312/0.375/0.500/0.625/0.750/0.875/1.00/1.25 | 0.040 | 0.111 | 0.176 | ||
| STFH / STFHS / STFHA | #6 | 0.25/0.312/0.375/0.500/0.625/0.750/0.875/1.00/1.25/1.50 | 0.040 | 0.137 | 0.206 | ||
| STFH / STFHS / STFHA | #8 | 0.25/0.312/0.375/0.500/0.625/0.750/0.875/1.00/1.25/1.50 | 0.040 | 0.163 | 0.237 | ||
| STFH / STFHS / STFHA | #10 | 0.312/0.375/0.500/0.625/0.750/0.875/1.00/1.25/1.50 | 0.040 | 0.189 | 0.256 | ||
| STFH / STFHS / STFHA | #1/4 | 0.375/0.500/0.625/0.750/0.875/1.00/1.25/1.50 | 0.062 | 0.249 | 0.337 | ||
| STFH / STFHS / STFHA | #5/16 | 0.500/0.625/0.750/0.875/1.00/1.25/1.50 | 0.093 | 0.310 | 0.376 | ||
| STFH / STFHS / STFHA | M2.5 | 6/8/10/12/15/18 | 1.0 | 2.5 | 4.1 | ||
| STFH / STFHS / STFHA | M3 | 6/8/10/12/15/18/20/25 | 1.0 | 3.0 | 4.6 | ||
| STFH / STFHS / STFHA | M3.5 | 6/8/10/12/15/18/20/25/30 | 1.0 | 3.5 | 5.3 | ||
| STFH / STFHS / STFHA | M4 | 6/8/10/12/15/18/20/25/30/35 | 1.0 | 4.0 | 5.9 | ||
| STFH / STFHS / STFHA | M5 | 8/10/12/15/18/20/25/30/35 | 1.0 | 5.0 | 6.5 | ||
| STFH / STFHS / STFHA | M6 | 10/12/15/18/20/25/30/35 | 1.6 | 6.0 | 8.2 | ||
| STFH / STFHS / STFHA | M8 | 12/15/18/20/25/30/35 | 2.4 | 8.0 | 9.6 | ||