The general representation of the screw is as follows:
Example: 4 X 10 PW A H C (+)
1 2 3 4 5 6 7
1 screw diameter
2 screw length
3 Screw head type B: Spherical cylindrical head; C: Cylindrical head; F(K): Countersunk head; H: Hex head HW: Hex head with washer; O: Half countersunk head; P: Flat head; R: Half element Head PW: flat head with washer; T: large flat head; V: mushroom head;
4 Screw tooth type A: Self-tapping tip (Japanese standard type 1) AB: self-tapping tip (Japanese standard 4th) dense B: self-tapping flat tail (Japanese standard type 2) sparse C: self-tapping flat tail (Japanese standard type 3) dense P: double thread HL: high and low teeth U: pineapple tooth pattern T: self-tapping flat tail cutting foot AT: self-tapping tip end cutting foot M: mechanical tooth BTT: B type triangular tooth CCT: C-type triangular teeth PTT: P-type triangular teeth STT: S-type triangular teeth
5 Heat treatment H: Heat treatment N: No heat treatment
6 Surface treatment Zn: white zinc C: color zinc B: blue zinc F: black zinc O: black oxide Ni: nickel Cu: bronze Br: red copper P: phosphating
7 Remarks (+): Cross slot (-): slot (T): chrysanthemum slot (H): hexagon socket (PZ): meter slot (+-): + slot (Y): Y slot ( H): H-groove (L): Retractable Fleece (WIS): Single-action spring washer (WIF): Single-acting flat washer (WIT): Single-moving external tooth washer (W2SF): Double-acting flat washer (W =6mm): washer outer diameter equal to 6mm (SUS): stainless steel (Cu): brass (Br): red copper (8.8): 8.8 screws (10.9): 10.9 screws (12.9): 12.9 screws (R) :Other notes
The above screw industry news comes from: Shenzhen Chuanggu screw Zhu manager 15818603477 http://
1) SABS1123, SANS1123 T600/3 SLIP ON FF FLANGE.
2) SABS1123, SANS1123 T1000/3 SLIP ON FF FLANGE.
3) SABS1123, SANS1123 T1600/3 SLIP ON FF FLANGE
4) SABS1123, SANS1123 T2500/3 SLIP ON FF FLANGE.
5) SABS1123, SANS1123 T4000/3 SLIP ON FF FLANGE.
Material:
CARBON STEEL: A105, Q235B etc.
STAINLESS STEEL: 304, 304L, 316, 316L, 1.4404, 1.4306, 1.4307.
Surface Antirust:
Surface antirust 1: HOT DIP GALVANIZING
Surface antirust 2: COLD GALVANIZING
Surface antirust 3: ELECTRO GALVANIZING
Surface antirust 4: ANTIRUST LIGHT OIL COATING
SANS1123 Flanges,SANS1123 Plate Flanges,Forged SANS1123 Flanges,1000/3 Plate Flanges
Shandong Zhongnuo Heavy Industry Co.,Ltd. , https://www.zhongnuoflanges.com