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Product Specifications:
| Item | Shaft Collar |
| Bore Diameter | 1/4" |
| Bore Tolerance | +0.0005" to +0.002" |
| Bore Type | Round |
| Clearance Dia. | 0.773" |
| Clearance Diameter | 0.77" |
| Collar Construction | 2-Piece |
| Collar Material | Stainless Steel |
| Collar Material Finish | Bright |
| Collar Material Grade | Grade 316 |
| Collar Outside Diameter | 5/8" |
| Collar Style | Clamp |
| Collar Width | 9/32" |
| Dimension Type | Standard |
| For Shaft Diameter | 1/4" |
| Grade | Grade 316 |
| Included Screws | (2) Hex Socket Cap Screw |
| Material | Stainless Steel |
| Maximum Operating Temperature | 350°F |
| Minimum Operating Temperature | -40°F |
| Number Of Pieces | 2 |
| Operating Temp. Range | -40°F to +350°F |
| Screw Location From Center | 0.21" |
| Screw Material | Stainless Steel |
| Screw Material Finish | Bright |
| Screw Material Grade | Grade 316 |
| Screw Seating Torque | 8 lbs.-in. |
| Screw Size | #4-40 |
| Screw Thread Size | #4-40 |
| Shaft Locking Type | Clamp On |
| Shaft Tolerance | -0.0005" to 0" |
| System Of Measurement | Imperial |
| Width | 0.281" |
| Width Tolerance | -0.01" to +0.003" |
Shipping Info:
| Ship weight (kg) | 0.01 |
| Ship height (cm) | 0.76 |
| Ship length (cm) | 20.32 |
| Ship width (cm) | 15.24 |
| HS code | 8483608000 |
| Country of Origin | US |
Product Variants
| Product | Model | Collar Material | Outside Dia. | Bore Dia. | Screw Material | Collar Material Finish | Shaft Tolerance | Bore Tolerance | Included Screws | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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SP-30-A | Aluminum | 2 7/8" | 1 7/8" | Alloy Steel | Bright | -0.0005" to 0" | +0.0005" to +0.002" | (2) Hex Socket Cap Screw | €92.59 | |
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SP-30-F | Carbon Steel | 2 7/8" | 1 7/8" | Alloy Steel | Black Oxide | -0.0005" to 0" | +0.0005" to +0.002" | (2) Hex Socket Cap Screw | €70.70 | |
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SP-30-SS | Stainless Steel | 2 7/8" | 1 7/8" | Stainless Steel | Bright | -0.0005" to 0" | +0.0005" to +0.002" | (2) Hex Socket Cap Screw | €260.76 | |
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SP-42-F | Carbon Steel | 3 7/8" | - | Alloy Steel | Black Oxide | -0.0005" to 0" | +0.0005" to +0.002" | (2) Hex Socket Cap Screw | €157.08 | |
![]() |
SP-43-SS | Stainless Steel | 4" | 2.688" | Stainless Steel | Bright | -0.0005" to 0" | +0.0005" to +0.002" | (2) Hex Socket Cap Screw | €497.45 | |
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SP-44-A | Aluminum | 4" | - | Alloy Steel | Bright | -0.0005" to 0" | +0.0005" to +0.002" | (2) Hex Socket Cap Screw | €195.88 | |
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SP-44-F | Carbon Steel | 4" | - | Alloy Steel | Black Oxide | -0.0005" to 0" | +0.0005" to +0.002" | (2) Hex Socket Cap Screw | €163.35 |
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RULAND MANUFACTURING SP-4-ST 1/4 Inch Two-Piece Shaft Collar, 316 SS, Clamp Style, 5/8 Inch OD, 0.281 Inch Wd.
€66.23 /unit


