Hex Socket Cap Head SEMS Screw with Plain Washer
Cap head, hex socket, plain washer. M2 x 0.4 to M10 x 1.5, 316 stainless.
Image is a rendering of this SEMS screw, made from its data sheet dimensions.
SEMS Screws
Inch Hex Socket Cap Head SEMS Screw with Small Diameter Plain Washer
SEMS screw: small plain washer held captive under the head. 4-40 UNC to 4-40 UNC, 316 stainless steel.
- Section
- SEMS screws
- Part no.
- SG-SEMS-SCSP
- Material
- Stainless steel
- Units
- Inch
Overview
A cap head SEMS screw with a hex socket and a small plain washer held captive under the head. The washer is fitted before the thread is rolled, so it cannot fall off: the screw and washer go in as one part, which saves time on the line and stops loose washers getting lost in equipment.
Made in 316 stainless steel (A4), passivated or chemi-black. Head dimensions to BS 2470. Sizes 4-40 UNC to 4-40 UNC.
Specifications
| Brand | S&G |
|---|---|
| Part no. series | SG-SEMS-SCSP |
| Head | Cap head, hex socket |
| Washers | Small plain washer, held captive |
| Standards | BS 2470 |
| Material | 316 stainless steel (A4) |
| Finish | Passivated or chemi-black |
| Threads | 4-40 UNC |
| Units | Inch (class 2A threads) |
| Thread-locking patch | Optional |
Sizes & part numbers
All values in inches. A and B are maximum values. For lengths over 0.625 the maximum thread length is 0.625. Values in inches. D is the plain washer outside diameter, max./min.
| Part no. | Thread T | A head Ø (in) | B head ht (in) | C socket | D washer Ø (in) | E (in) | F (in) | Standard L1 (in) |
|---|---|---|---|---|---|---|---|---|
| SG-SEMS-SCSP-4-40 | 4-40 UNC | 0.183 | 0.112 | 5/64 | .224 max | 0.022 | 0.045 | .250, .312, .375, .437, .500, .625, .750, 1.000, 1.625 |
How to order
Quote the part number with the underhead length L1, for example SG-SEMS-SCSP-4-40 × .500 in, and the finish: passivated or black. Ask for a thread-locking patch if you need one. Other lengths are made to order.
Key features
- Washer held captive: screw and washer fitted as one part
- No loose washers to drop into equipment
- 316 stainless steel for corrosion resistance
- Passivated or black finish
- Optional thread-locking patch
Applications
Electronic enclosuresControl panelsInstrumentsMarine & food equipmentRail & defence
Need a length, thread or washer not listed?Other lengths and combinations are made to order. Send us the part number or your drawing.Send enquiry
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