MS35276-261 Mil-Spec Fillister Head Screws: Specs and Uses
By Mutual Screw & Supply | Published: 2026-11-02
Category: Product Reviews
A practical buying guide to MS35276-261 fillister head screws: what the 18/8 stainless, slotted drive, and fillister head mean for your project, plus clear rules for choosing them.
Quick answer
Choose MS35276-261 screws when you need a corrosion-resistant, slotted fillister head machine screw for fastening metal parts, panels, or enclosures. The 18/8 stainless steel construction and fillister head make them a practical choice for general assembly work where a slotted drive is acceptable.
Why the fillister head shape matters
A fillister head has a taller, more rounded profile than a flat head or pan head. That extra height gives you more bearing surface and a deeper slot, which helps when you need to apply torque with a flat-blade screwdriver. It also sits above the surface, so it is not ideal for flush mounting. If your project requires a low-profile or flush finish, a flat head or countersunk screw is a better fit.
Slotted drive: trade-offs to consider
Slotted drive screws are simple and widely compatible with common flat-blade screwdrivers. However, they are more prone to cam-out (the driver slipping out of the slot) than Phillips or hex drives, especially at higher torque. For light to medium assembly work where you can control torque, slotted drive is fine. For high-torque or high-vibration applications, you may want a different drive style.
18/8 stainless steel: corrosion resistance and strength
18/8 stainless steel (also known as 304 stainless) offers good corrosion resistance in many indoor and outdoor environments. It is not as strong as alloy steel, so it is not the best choice for high-stress structural connections. For fastening metal parts, panels, and enclosures where moderate strength and rust resistance are needed, it performs well. Keep in mind that stainless steel can gall (seize) when threaded into stainless steel, so using an anti-seize lubricant is a sensible precaution.
Decision rules for buying MS35276-261 screws
- Match the drive to your tools: If you have flat-blade screwdrivers and your assembly allows controlled torque, slotted drive is workable. If you need high torque or frequent disassembly, consider a Phillips or hex drive screw instead.
- Check head clearance: Fillister heads protrude above the surface. Use them where a raised head is acceptable. For flush mounting, choose a countersunk or flat head screw.
- Confirm material compatibility: 18/8 stainless steel is suitable for most indoor and outdoor fastening of metal parts, panels, and enclosures. Avoid using it in high-stress structural joints where stronger alloy steel is needed. Apply anti-seize when mating with stainless steel to reduce galling.
- Verify quantity and packaging: These screws are sold in packages of 25. Calculate your total needs before ordering to avoid shortages or excess inventory.
Product facts
- MS35276-261 | Mil-Spec Screws | Fillister Head | Slotted Drive | 18/8 Stainless Steel (25 / Pkg.): Manufactured from 18/8 stainless steel with a plain finish, slotted drive, and fillister head. This combination gives you corrosion resistance and a head style that accepts a flat-blade screwdriver for general fastening.
MS35276-261 | Mil-Spec Screws | Fillister Head | Slotted Drive | 18/8 Stainless Steel (25 / Pkg.)
Is this the right screw for you?
Best for
- Fastening metal parts, panels, and enclosures where a raised fillister head is acceptable
- Projects needing moderate corrosion resistance from 18/8 stainless steel
- Assembly work with flat-blade screwdrivers and controlled torque
Not for
- Flush-mount applications requiring a countersunk head
- High-torque or high-vibration joints where a different drive style is safer
- Structural connections that demand higher strength than 18/8 stainless provides
