Ningbo Haitian Fastener Industry Co., LTD.
A professional manufacturer for screws, bolts and nuts.

Screws > Tapping screw, Ifi sheet metal screws series
- IFI H33 Oval phil/pozi Head, Tapping Screws, C1018 or C1022 + Harden
- Finish: ZP, YZ, or others.

| Thead Size | # 4 | # 5 | # 6 | # 8 | # 10 | # 12 | # 14 |
| Length | 1/4" - 1" | 1/4" - 1" | 1/4" - 2" | 3/8" - 3" | 3/8" - 3" | 3/8" - 3" | 3/8" - 4" |
- IFI H24 Flat phil/pozi Head, Tapping Screws, C1018 or C1022 + Harden
- Finish: ZP, YZ, or others.

| Thead Size | # 4 | # 5 | # 6 | # 8 | # 10 | # 12 | # 14 |
| Length | 1/4" - 1" | 1/4" - 1" | 1/4" - 2" | 3/8" - 3" | 3/8" - 3" | 3/8" - 3" | 3/8" - 4" |
- IFI H43 Truss Head, Tapping Screws, C1018 or C1022 + Harden
- Finish: ZP, YZ, or others.

| Thead Size | # 4 | # 6 | # 7 | # 8 | # 10 | # 12 | # 14 |
| A (max) | 0.257 | 0.321 | 0.352 | 0.384 | 0.448 | 0.511 | 0.573 |
| H | 0.069 | 0.086 | 0.094 | 0.102 | 0.118 | 0.134 | 0.15 |
| L | 5/16" - 1" | 5/16" - 2" | 3/8" - 2" | 3/8" - 2 -1/2" | 3/8" - 3" | 1/2" - 4" | 1/2" - 6" |
- Hex Washer Head Tapping Screws. C1018 or C1022 + Harden
- Finish: ZP, YZ, or others.
- with pvc /rubber Washer.
- with steel+EPDM boned washer.

| Thead Size | # 4 | # 5 | # 6 | # 8 | # 10 | # 12 | # 14 |
| Length | 1/4" - 1" | 1/4" - 1" | 1/4" - 2" | 3/8" - 3" | 3/8" - 3" | 3/8" - 3" | 3/8" - 4" |