FSDS Folded Fingerstock Gasket
The FSDS Folded Fingerstock Gasket is a high-performance EMI shielding solution designed for electronic enclosures, access panels, cabinets, and communications equipment. Manufactured from beryllium copper, this fingerstock gasket provides excellent electrical conductivity, reliable grounding, and long-lasting spring performance.
The FSDS design features a shortened mounting area with the base positioned in the same plane as the spring profile. This configuration is commonly modified for specialized applications that require compact mounting arrangements while maintaining effective EMI/RFI shielding and electrical continuity.
FSDS Folded Gaskets are widely used in aerospace, military electronics, telecommunications systems, industrial controls, and medical equipment where dependable shielding and grounding are critical.
Options
PP = plating code from plating code table below
X.XXX = Desired length
Lengths greater than 24 inches are only available in the following finishes: BD, NI, SN, ST, SNPB
| Leader Tech Part Number | A (in) | B (in) | C (in) | D (in) | E (in) | F (in) | G (in) | T (in) | Max Length (in) | Fingers at Max Length | Adhesive |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Leader Tech Part Number | A (in) | B (in) | C (in) | D (in) | E (in) | F (in) | G (in) | T (in) | Max Length (in) | Fingers at Max Length | Adhesive |
| 25-109FSDS-PP-X.XXX | 0.250 | 1.090 | 0.160 | 0.140 | 0.380 | 0.335 | 0.040 | 0.0050 | 300 | 800 | N |
| 25-S-109FSDS-PP-X.XXX | 0.250 | 1.090 | 0.160 | 0.140 | 0.380 | 0.335 | 0.040 | 0.0030 | 300 | 800 | N |
| 41-163FSDS-PP-X.XXX | 0.410 | 1.630 | 0.190 | 0.140 | 0.500 | 0.460 | 0.040 | 0.0070 | 300 | 600 | N |
| Leader Tech Part Number | A (mm) | B (mm) | C (mm) | D (mm) | E (mm) | F (mm) | G (mm) | T (mm) | Max Length (mm) | Fingers at Max Length | Adhesive |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Leader Tech Part Number | A (mm) | B (mm) | C (mm) | D (mm) | E (mm) | F (mm) | G (mm) | T (mm) | Max Length (mm) | Fingers at Max Length | Adhesive |
| 25-109FSDS-PP-X.XXX | 6.35 | 27.69 | 4.06 | 3.56 | 9.65 | 8.51 | 1.02 | 0.130 | 7619 | 800 | N |
| 25-S-109FSDS-PP-X.XXX | 6.35 | 27.69 | 4.06 | 3.56 | 9.65 | 8.51 | 1.02 | 0.080 | 7619 | 800 | N |
| 41-163FSDS-PP-X.XXX | 10.41 | 41.40 | 4.83 | 3.56 | 12.70 | 11.68 | 1.02 | 0.180 | 7619 | 600 | N |
| Plating Code | Plating | Specification |
|---|---|---|
| BD | As Heat treated | As Heat Treated with Nitrogen |
| AU | Gold | ASTM B488, TYPE I, CODE C, CLASS 1.25 PRECEDED BY AN UNDERCOAT OF AT LEAST .000047" OF COPPER PER SAE-AMS2418 AND AT LEAST .000047" OF NICKEL PER SAE-AMS-QQ-N-290 |
| AG | Silver, Bright | ASTM B700, TYPE 2, GRADE B, CLASS N .0001" MIN PRECEDED BY A NICKEL UNDERCOAT AT LEAST .000039" THICK PER SAE-AMS-QQ-N-290 |
| MAG | Silver, Matte | ASTM B700, TYPE 2, GRADE A, CLASS N .0001" MIN PRECEDED BY A NICKEL UNDERCOAT AT LEAST .000039" THICK PER SAE-AMS-QQ-N-290 |
| CDC | Cadmium Chromate, Clear | ASTM B766, CLASS 5, TYPE III |
| CDY | Cadmium Chromate, Yellow | ASTM B766, CLASS 5, TYPE II |
| NI | Electroless Nickel RoHS | ASTM B733, TYPE IV, SC1, CLASS 1 |
| SN | Tin, Bright | ASTM B545, CLASS A PRECEDED BY A NICKEL UNDERCOAT AT LEAST .00005" THICK PER SAE-AMS-QQ-N-290 |
| ST | Tin, Matte | ASTM B545, CLASS A PRECEDED BY A NICKEL UNDERCOAT AT LEAST .00005" THICK PER SAE-AMS-QQ-N-290 |
| SNPB | Tin Lead | ASTM B 579, SC2 PRECEDED BY AN UNDERCOAT OF AT LEAST .000098" OF COPPER PER SAE-AMS2418 AND AT LEAST .000098" OF NICKEL PER SAE-AMS-QQ-N-290 |
| SU | Solderable Unplated | - |
| ZNC | Zinc, Clear | ASTM B633, SC1, TYPE III |
| ZNY | Zinc, Yellow | ASTM B633, SC1, TYPE II |