Hex Head Cap Screws
Full and partial thread, #10 through 1-1/4 in. Bright zinc and yellow chromate off the shelf, hot-dip galvanized in the structural sizes.
GR2 · GR5 · GR8 / ZP, ZY, HDG, plain
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Products
What sits on the floor in Vandalia.
18,400 active SKUs, listed below by category with the size ranges, grades, finishes and governing standards we actually hold. Anything outside these ranges we source. Stocked-elsewhere items are typically two to five working days; made-to-print, modified or plated parts are quoted by operation, and we'll tell you which it is before you commit.
The floor, at a glance
Eighteen bin walls of it
Every part below is stocked in Vandalia in the finishes shown — bright zinc, yellow chromate, black oxide, hot-dip galvanized and passivated stainless.
Hex Cap Screws
Finished Hex Nuts
Flat Washers
Lock Washers
Socket Caps
Machine Screws
Carriage Bolts
Nylon Insert Nuts
Threaded Rod
Wedge Anchors
Self-Drilling
Dowel & Roll Pins
Structural Bolts
Wood & Deck
Wing Nuts
Eye Bolts
Cotter Pins
Springs
Inch fasteners
Inch series
The bulk of our inventory. Fractional sizes from #4 through 1-1/4 in., stocked in the grades that cover general assembly through structural steel.
Structural Bolting
A325 type 1 heavy hex in 1/2 through 1-1/4 in., stocked alongside the matching heavy hex nuts and hardened structural washers.
F3125 A325 · A563 DH · F436 / plain, HDG
Nuts & Washers
Finished hex, heavy hex, jam and nylon insert, with SAE and USS flat, structural and split lock washers to match.
GR2 · GR5 · GR8 · A563 · A194 2H / ZP, ZY, HDG, plain
HHCS, Zinc
HHCS, GR8 ZY
Carriage Bolts
Lag Screws
Hex Nuts
Nylon Locknuts
SAE & USS Flat
F436 Structural
Split Lock
Threaded Rod
Eye Bolts
Wing Nuts
| Category | Size range | Grades held | Finishes | Standard |
|---|---|---|---|---|
| Hex head cap screws | #10 – 1-1/4 | Commercial (#10); GR2, GR5, GR8 (1/4 up) | ZP, ZY, HDG, plain | ASME B18.2.1 / SAE J429 |
| Structural bolts | 1/2 – 1-1/4 | A325 type 1 | Plain, HDG | ASTM F3125 |
| Carriage bolts | 1/4 – 3/4 | GR2, GR5 | ZP, HDG | ASME B18.5 |
| Lag screws | 1/4 – 3/4 | Low carbon | ZP, HDG | ASME B18.2.1 |
| Finished hex nuts | #4 – 1-1/4 | Commercial (#4 – #12); GR2, GR5, GR8 (1/4 up) | ZP, ZY, plain | ASME B18.2.2 / SAE J995 |
| Heavy hex nuts | 1/2 – 1-1/4 | A563 A, C, DH; A194 2H | Plain, HDG | ASTM A563 / A194 |
| Nylon insert locknuts | #4 – 3/4 | N2, N5, N8 by style | ZP, ZY | ASME B18.16.6 |
| Flat washers, SAE & USS | #6 – 1-1/4 | Low carbon | ZP, HDG, plain | ASME B18.22.1 |
| Structural washers | 1/2 – 1-1/4 | Hardened | Plain, HDG | ASTM F436 |
| Split lock washers | #4 – 1 | Medium carbon | ZP, HDG, plain | ASME B18.21.1 |
| Threaded rod | 1/4 – 1, 6 ft & 12 ft | A307 GR A, A193 B7 | ZP, HDG, plain | ASTM A307 / A193 |
On grade markings: GR5 carries three radial lines on the head, GR8 carries six. If the head in your hand is unmarked, bring it to the counter rather than guessing — we'll identify it off the bench.
Screws
Machine, tapping and self-drilling
Head and drive combinations stocked across the common point types. Six-lobe is stocked in the sizes that assembly lines actually run.
Machine Screws
18-8 Machine
Self-Drilling
Hex Washer Head
Sheet Metal
Deck & Bugle
Thread Cutting
SEMS Washers
Socket Caps
305SS Deck
Flat 82°
Wafer Head
| Category | Size range | Heads | Drives | Points / material |
|---|---|---|---|---|
| Machine screws | #2 – 3/8 | Pan, flat 82°, oval, truss, round, fillister | Phillips, slotted, square, combo, 6-lobe | Steel, 18-8, brass |
| Sheet metal screws | #4 – #14 | Pan, flat, hex washer, truss, oval | Phillips, slotted, square, 6-lobe | Type A, AB, B |
| Self-drilling screws | #6 – #14 | Hex washer, pan, flat, wafer | Phillips, square, 6-lobe | #2 – #5 drill points, size dep. |
| Thread cutting screws | #4 – 3/8 | Pan, flat, hex washer | Phillips, slotted | Type 23, 25, F |
| Wood & deck screws | #6 – #14 | Bugle, flat, trim | Phillips, square, 6-lobe | Steel, ceramic-coated steel, 305SS |
| SEMS | #4 – 3/8 | Pan, hex washer | Phillips, slotted | Ext tooth, int tooth, split lock |
Point selection: a self-drilling screw only works if the point out-drills the stack. Tell us the total metal thickness and we'll tell you which point number to run.
Stainless
Stainless and non-ferrous
Our fastest-turning line. 18-8 covers general corrosion service; 316 goes where there's chloride, wash-down or salt. We stock both rather than substituting one for the other quietly.
18-8 General Service
Caps, sockets, machine screws, nuts and washers in the sizes that move weekly. Passivated, no plating to chip off.
18-8 · 304 / passivated, plain
316 Marine & Wash-Down
Held separately from the 18-8 bins and bagged marked. If your print calls 316, you get 316 — not the close-enough grade.
316 / passivated
Brass & Silicon Bronze
Small machine screws and washers for electrical, instrument and marine trim work in the common small diameters.
Brass · silicon bronze / plain
18-8 HHCS
SS Socket Cap
SS Machine
316 Hex Nuts
SS Flat Washer
SS Lock Washer
304 / 316 Rod
410 Self-Drill
SS Nyloc
SS Eye Bolts
SS Wing Nuts
18-8 Cotter
| Category | Size range | Materials | Finish | Standard |
|---|---|---|---|---|
| Hex head cap screws | 1/4 – 3/4 | 18-8, 316 | Passivated | ASTM F593 |
| Socket head cap screws | #4 – 1/2 | 18-8, 316 | Plain | ASME B18.3 / ASTM F837 |
| Machine screws | #4 – 1/4 | 18-8, brass, silicon bronze | Plain | ASME B18.6.3 |
| Hex nuts | #4 – 3/4 | Commercial (#4 – #12); F594 (1/4 up) | Passivated | ASTM F594 / B18.2.2 |
| Flat & lock washers | #6 – 3/4 | 18-8, 316 | Plain | B18.22.1 / B18.21.1 |
| Threaded rod | 1/4 – 3/4, 6 ft | 304, 316 | Plain | ASTM F593 |
| Self-drilling screws | #8 – #14 | 410, 305 cap | Plain, coated | — |
Galling: stainless-on-stainless seizes under speed and load. For 3/8 in. and up we'll suggest an anti-seize or a dissimilar nut material rather than let you find out on the assembly floor.
Metric
Metric series
M3 through M24 in the property classes that cover most imported equipment and European machine builds. Listed to the current ISO standard, with the withdrawn DIN number in brackets where the trade still calls it that. Ask and we'll confirm the equivalent before you order.
CL 8.8 HHCS
DIN 912 Socket
Button Head
A2-70 Socket
Set Screws
DIN 934 Nuts
DIN 985 Nyloc
ISO 7089
A2 Washers
CL 4.8 Machine
A4-70 HHCS
Spring Washer
| Category | Size range | Class / material | Finishes | Standard |
|---|---|---|---|---|
| Hex head cap screws | M4 – M24 | CL 8.8, 10.9, A2-70, A4-70 | ZP, black, plain | ISO 4014 / 4017 |
| Socket head cap screws | M3 – M20 | CL 12.9, A2-70 | Black oxide, plain | ISO 4762 (DIN 912) |
| Button head sockets | M3 – M12 | CL 10.9, A2-70 | Black oxide, plain | ISO 7380-1 |
| Flat head sockets | M3 – M12 | CL 10.9, A2-70 | Black oxide, plain | ISO 10642 (DIN 7991) |
| Set screws | M3 – M12 | CL 45H, A2 | Black oxide, plain | ISO 4026 / 4027 / 4029 |
| Hex nuts | M3 – M24 | CL 8, 10, A2-70, A4-70 | ZP, plain | ISO 4032 (DIN 934) |
| Nylon insert locknuts | M3 – M20 | CL 8, A2-70 | ZP, plain | ISO 10511 (DIN 985) |
| Flat washers | M3 – M24 | 200HV, A2 | ZP, plain | ISO 7089 / 7093-1 |
| Machine screws | M3 – M8 | CL 4.8, A2 | ZP, plain | ISO 7045 / 7046 |
Coarse or fine? M8 is 1.25 pitch coarse and 1.00 fine, and the two thread into each other just far enough to fool you. Give us the pitch off the print or bring a sample and we'll gauge it.
Anchors, pins & shop stock
Everything else that keeps a plant running
The bin wall at the back of the building. Concrete anchors, pinning stock, keystock and rivets — the items nobody orders until the line is already down.
Wedge Anchors
304SS Wedge
Sleeve Anchors
Dowel Pins
Roll & Spring Pins
Cotter Pins
Clevis Pins
Springs
Keystock
Blind Rivets
Eye & Lift Bolts
Wing & Cap Nuts
| Category | Size range | Material | Finishes |
|---|---|---|---|
| Wedge anchors | 1/4 – 3/4 | Carbon steel, 304SS | ZP, mechanical galv |
| Sleeve & drop-in anchors | 1/4 – 3/4 | Carbon steel | ZP |
| Machine screw anchors | #10 – 1/2 | Zamac, lead | Plain |
| Dowel pins | 1/8 – 5/8 | Alloy, 18-8 | Plain |
| Roll & spring pins | 1/16 – 1/2 | Carbon, 420SS | Plain, ZP |
| Cotter & clevis pins | 1/16 – 1/2 | Carbon, 18-8 | ZP, plain |
| Keystock | 1/8 – 1, 12 in. lengths | 1018 cold drawn | Plain |
| Blind rivets | 3/32 – 1/4 | Aluminum, steel, 18-8 | Plain, painted |
Can't find it? We source to print.
Per Print
Cut To Length
Plated
Patched
Modified
Domestic
Send a print, a photograph or the old part. Most quotes go back the same day; anything needing a mill run gets a lead time before a price so you aren't left waiting on either.
How to read this page
Stocked means stocked — on the shelf, in Vandalia.
The ranges above are what we hold, not a supplier catalogue we can theoretically pull from. If a size sits inside a listed range, it is nearly always on the floor and will ship the same afternoon on an order placed before 4:00 PM ET.
Outside the range doesn't mean no. It means we tell you which it is — stocked elsewhere at two to five working days, or an operation we quote by that operation.
- Size ranges are inclusive of both end sizes shown
- Finish abbreviations: ZP zinc, ZY yellow chromate, HDG hot-dip galvanized
- Grades listed are stocked grades, not the full published range
- Metric DIN numbers shown in brackets are withdrawn but still in trade use
- Certs and country of origin available on every graded line
If it isn't listed
We source to print, and we say so up front.
Odd sizes, non-standard heads, unusual finishes and per-print parts go out to our mill and plating sources. Stocked-elsewhere items run two to five working days; anything needing an operation is quoted by that operation and source.
What we won't do is quietly substitute a near-match. If we can't get exactly what you called out, you'll hear the alternative and the tradeoff before anything ships.
- Per-print and modified standard parts
- Non-standard lengths, cut and re-chamfered in house
- Plating and coating to your specification
- Patching, thread locking and thread masking
- Domestic-only sourcing where the contract requires it
- Import sourcing where the price break justifies the lead time
Not sure what the part is called?
Bring us the print, the old part, or a photograph of what came out. We identify parts off a bench sample most days of the week.
480 825-6678
Mon–Fri 7:00 AM – 5:00 PM ET