SO-RT440-8ZI
Thru-hole Threaded Standoffs – Types SO, SOA, SOS
SO-RT440-8ZI
Thru-hole Threaded Standoffs – Types SO, SOA, SOS
The PEM RT® free-running locking feature allows the mating screw to turn freely until clamp load is applied. If the tightening force is removed, these standoffs no longer provide any torsional resistance to rotation until clamp load is reapplied.
• Improves load distribution among all threads, reducing stress on first engaged thread. • Turns freely until clamp load is applied. • Resistant to vibrational loosening. • Locking feature reusability is not affected by number of on/off cycles. • Uses same mounting hole and installation tooling as standard standoff.
Specifications
- Thread Code
- RT440
- Thread Size
- .112-40 (#4-40)
- Fastener Material
- Hardened Carbon Steel
- Standard Finish
- 5um, Colorless, SC1, Type III, Zinc plated per ASTM B633
- For Use in Sheet Hardness
- HRB 80 / HB 150 or Less
- Product Category
- Thru-hole Threaded Standoffs – Types SO, SOA, SOS – Unified
- Thread Type
- RT Thread Form, Internal
- Brand
- PEM
- Installation Equipment/Method
- Self-Clinching
- PEM Product Family
- SO
- Product Type
- Standoffs
- Through Hole/Blind
- Through Hole
- C + .000 – .005_in
- 0.165in
- H – Nom._in
- 0.187in
- Hole Size in Sheet +.003 – .000_in
- 0.166in
- L +.002 -.005_in
- 0.25in
- Min. Dist. Hole C/L to Edge_in
- 0.23in
Installation & Performance Data
| Type | Thread Code | Test Sheet Material | Installation (lbs.) | Haeger Part Number Anvil | Haeger Part Number Punch | Max. Rec. Tightening Torque For Mating Screw (in. lbs.) | Pemserter Part Number Anvil | Pemserter Part Number Punch | PULL THRU (lbs.) | Pushout (lbs.) | Standoff Material | Torque-out (in. lbs.) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SO SOS SOA BSO BSOS BSOA | 440 | .060” 5052-H34 Aluminum | 1100 | H-109-4/M3L | H-108-0020L | 4.75 | 970200487300 | 975200048 | 280 | 160 | Steel | 11 |
| SO SOS SOA BSO BSOS BSOA | 440 | .060” Cold-rolled Steel | 2200 | H-109-4/M3L | H-108-0020L | 4.75 | 970200487300 | 975200048 | 330 | 225 | Steel | 19 |
Inventory
| Distributor | Quantity | Contact | Phone | Address | Locations |
|---|