Description
RS PRO 751-427 Alloy Steel Compression Spring, 35.5mm x 4.4mm OD — BOLTON SKU 54797.
About the RS PRO 751-427 Alloy Steel Compression
This is an alloy steel helical compression spring in the RS PRO range. Its free length is 35.5 mm and its outside diameter is 4.4 mm, wound from 0.4 mm wire. The spring rate is 0.22 N/mm, so the load it develops is directly proportional to how far it is compressed. The minimum working length is 11.4 mm, and at that length the spring carries 5.25 N — those two figures together define the bottom of the usable stroke and should be treated as the design limit rather than the solid height. Ends are square and unground, which is the standard low-cost end treatment: it gives a flat-enough seat for general mechanical use without the extra grinding operation. RS PRO records no applicable standards or approvals against this reference. Country of origin is the United Kingdom.
Key specifications
| Brand | RS PRO |
|---|---|
| Reference | 751-427 |
| Product type | Compression spring |
| Material | Alloy steel |
| Free length | 35.5 mm |
| Outside diameter | 4.4 mm |
| Wire diameter | 0.4 mm |
| Minimum working length | 11.4 mm |
| Load at minimum working length | 5.25 N |
| Spring rate | 0.22 N/mm |
| End type | Square and unground |
| Standards / approvals | None stated |
| Country of origin | United Kingdom |
Typical applications
A 0.22 N/mm rate and a 5.25 N load at full working travel put the RS PRO 751-427 technical component firmly in the light-duty class: it is a return, take-up or light-preload element rather than a load-bearing one. The long 35.5 mm free length against a 4.4 mm outside diameter gives a slender spring with a long stroke, so it is used inside a bore or over a guide rod where lateral buckling is restrained. Typical duties are returning a plunger, latch or lever to rest, keeping a light contact force on a sliding part, or taking up free play in a linkage.
Supplied by BOLTON Technical Equipment Supplies against request for quotation. Add this item to your RFQ basket to request pricing, lead time and documentation requirements (e.g. CoC, datasheets or test reports where applicable).
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