Heavy Series Stacking Bolt UNC Group 3S
- Metric ISO thread (M10, M12, M16, M20, M24 & M30)
- Available in W2 (Carbon Steel, Phosphated) qualitie
- W1, W3, W4 & W5 on request
- UNC thread on request
- According DIN 3015
Heavy Series Stacking Bolt UNC Group 3S
The Group 3S Type AF Stacking Bolt is a heavy-duty dedicated fastener for STAUFF heavy series pipe clamp systems and SIP safety locking plates. It features a special external hex coupling structure for secure multi-layer pipe clamp stacking, providing excellent vibration resistance and stable long-term fastening in hydraulic and industrial piping systems. Manufactured to STAUFF and DIN specifications for perfect dimensional match and reliable performance.
Heavy Series Stacking Bolt UNC Group 3S measurement and real pictures:
- Model: AF-3S-M-W2, AF-3S-U-W3
- Group: 3S
- DIN No.: 1
- Total Length L1: 49 mm (1.93 inch)
- Shaft Length L2: 25 mm (0.98 inch)
- Minimum Thread Length L3: 15 mm (0.59 inch)
- Hex Head Size: 14 mm
- Thread Options: M10 Metric ISO Thread / 3/8-16 UNC Unified Coarse Thread




Heavy Series Stacking Bolt UNC Group 3S Size and Drawings:

| Group STAUFF | DIN | L1 (mm / in) | L2 (mm / in) | L3 min. (mm / in) | Hex (mm / in) | Thread G |
| 3S | 1 | 49 | 25 | 15 | 15 | M10 |
| 1.93 | 0.98 | 0.59 | 0.59 | 3/8-16 UNC | ||
| 4S | 2 | 65 | 40 | 15 | 15 | M10 |
| 2.56 | 1.57 | 0.59 | 0.59 | 3/8-16 UNC | ||
| 5S | 3 | 77 | 51 | 15 | 15 | M10 |
| 3.03 | 2.01 | 0.59 | 0.59 | 3/8-16 UNC | ||
| 6S | 4 | 110 | 82 | 18 | 17 | M12 |
| 4.33 | 3.23 | 0.71 | 0.67 | 7/16-14 UNC | ||
| 7S | 5 | 144 | 110 | 24 | 22 | M16 |
| 5.67 | 4.33 | 0.94 | 0.87 | 5/8-11 UNC | ||
| 8S | 6 | 200 | 150 | 30 | 27 | M20 |
| 7.87 | 5.91 | 1.18 | 1.06 | 3/4-10 UNC | ||
| 9S | 7 | 240 | 180 | 50 | 30 | M24 |
| 9.45 | 7.09 | 1.97 | 1.18 | 7/8-9 UNC | ||
| 10S | 8 | 331 | 256 | 62 | 46 | M30 |
| 13.03 | 10.08 | 2.44 | 1.81 | 1-1/8-7 UNC |
Heavy Series Stacking Bolt UNC Group 3S workshop:


- Precision dimensional inspection to match STAUFF specifications
- Customizable materials, finishes and thread types
- Flexible order quantities, sample orders and large bulk wholesale
- Direct factory pricing, fast lead times and full technical support
Heavy Series Stacking Bolt UNC Group 3S Shipment:

Exporting Market:
Tianjin Techi industrial is one of top Heavy Duty Stacking Bolt manufacturer and exporter in CHINA,we export Stacking Bolt and pipe clamps to Afghanistan, Albania, Algeria, Andorra, Angola, Antigua, Barbuda,Argentina,Armenia,Australia,Austria,Azerbaijan,Bahamas,Bahrain,Bangladesh,Barbados,Belarus,Belgium,Belgium, Belgium, Belize, Benin, Bhutan, Bolivia, Bosnia and Herzegovina, Botswana, Brazil, Brunei, Burkina Faso ,Burundi, Burundi, Cabo Verde, Canada, Chad, Cambodia ,Chile, Colombia, Costa Rica, Cyprus, Congo, Democratic Republic of the, Cuba ,Croatia, Denmark, Djibouti, Dominica, Dominican Republic, Ecuador , Egypt, El Salvador, Equatorial Guinea , Eritrea, Estonia, Ethiopia, Fiji, France, Gabon Gambia, Georgia, Germany, Ghana, Greece, Grenada, Guatemala, Guinea-Bissau, Guyana, Haiti, Honduras, Hungary ,Iceland, India, Indonesia, Iran, Iraq, Ireland, Israel, Italy, Jamaica ,Japan,Jordan,Kazakhstan,Kenya,Kiribati,Kosovo,Kuwait,Kyrgyzstan,Laos,Latvia,Lebanon,Lesotho,Liberia,Libya,Liechtenstein
| Payment & Shipping Terms | Supply Capacity | ||
| Payment Term: | L/C, Western Union, T/T | Production Capacity: | 80000 Per Day |
| MOQ: | 500 Piece/Pieces | Packing: | 100/carton |
| Means of Transport: | Land, Ocean,Air | Delivery Date: | 15 working day |






