
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 screw: plain washer and curved spring washer held captive under the head. M3 x 0.5 to M3 x 0.5, 316 stainless steel.
A pan head SEMS screw with a cross recess (type Z) and a plain washer and curved spring 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 ISO 7045 type Z recess, spring washer DIN 137A. Sizes M3 x 0.5 to M3 x 0.5. The increased shank (plain under the head, thread only for length L2) keeps the screw captive in a panel hole after the washers are on.
| Brand | S&G |
|---|---|
| Part no. series | SG-SEMS-PPPS-XS |
| Head | Pan head, cross recess (type Z) |
| Washers | Plain washer and curved spring washer, held captive |
| Standards | ISO 7045 type Z recess, spring washer DIN 137A |
| Material | 316 stainless steel (A4) |
| Finish | Passivated or chemi-black |
| Threads | M3 x 0.5 |
| Units | Metric (class 6g threads) |
E is the washer stack in the free state. L2 is the full-thread length; the plain shank holds the washers captive. Values in mm. D is the plain washer outside diameter, max./min.
| Part no. | Thread T | A head Ø (mm) | B head ht (mm) | C driver no. | D washer Ø (mm) | E (mm) | F (mm) | Standard L1 (mm) |
|---|---|---|---|---|---|---|---|---|
| SG-SEMS-PPPS-XS-M3 | M3 x 0.5 | 5.6 | 2.4 | 1 | 6.0/5.7 | 1.9 max | 2.4 min | 6, 8, 10, 12, 16, 20, 25, 30 |
| Thread | Standard L2 (mm) |
|---|---|
| M3 x 0.5 | 3, 4, 5, 6, 8, 10, 12, 16, 20, 25 |
Quote the part number with the underhead length L1 and the full-thread length L2, for example SG-SEMS-PPPS-XS-M3 × 16 mm, L2 5 mm, and the finish: passivated or black. Other lengths are made to order.

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