Acquisition method (AMC)
1
FSC 5305 × SCREW,CLOSE TOLERANCE
SCREW,CLOSE TOLERANCE
5305-01-170-4571 FSC 5305
NSN 5305-01-170-4571 (also written 5305011704571; NIIN 01-170-4571) is a screw, close tolerance in Federal Supply Class 5305, Screws. 12 manufacturer part numbers from 12 suppliers are on record. It was last purchased in Nov 2026.
Open for bid
No open solicitations on record for this NSN right now.
Can you win it?
This item is coded as suitable for competitive acquisition (AMC 1).
Suffix (AMSC)
B
Competition
Coded for competition
AMC 1: suitable for competitive acquisition, second or later time. AMSC B: must be bought from the sources named on a source control or selected item drawing. The codes describe the item's status on record, not any one solicitation. What the codes mean
What it is — can you make it?
Dimensions, the FLIS specification requirements, and the manufacturer part numbers already qualified against this NSN.
Dimensioned drawing
Generated from the federal catalog's dimensional data for this NSN — reference only, not a manufacturing drawing.
Specifications
From the federal catalog (DLA FLIS / PUB LOG) — what your part has to meet. Cited specification documents can be looked up in ASSIST Quick Search ↗, DoD's public spec repository — copy the document number in.
| Requirement | Value |
|---|---|
| THREAD CLASS AAJD | 3A |
| THREAD DIRECTION AAJF | RIGHT-HAND |
| THREAD LENGTH AASA | INCHES MINIMUM 0.320 AND INCHES MAXIMUM 0.370 |
| FASTENER LENGTH AASB | INCHES MINIMUM 0.580 AND INCHES MAXIMUM 0.610 |
| HEAD STYLE AASK | — |
| HEAD DIAMETER AASL | INCHES MINIMUM 0.306 AND INCHES MAXIMUM 0.322 |
| HEAD HEIGHT AASU | INCHES MINIMUM 0.105 AND INCHES MAXIMUM 0.115 |
| GRIP DIAMETER AAUR | INCHES MINIMUM 0.1625 AND INCHES MAXIMUM 0.1635 |
| INTERNAL DRIVE STYLE ABQZ | — |
| NOMINAL THREAD DIAMETER AHYM | INCHES 0.164 |
| GRIP LENGTH ANEE | INCHES MINIMUM 0.240 AND INCHES MAXIMUM 0.260 |
| THREAD QUANTITY PER INCH CMLP | 32 |
| SURFACE FINISH CSYM | BEARING SURFACE OF HEAD MICROINCHES 32.0 |
| SURFACE FINISH CSYM | GRIP MICROINCHES 32.0 |
| SURFACE FINISH CSYM | THREADS MICROINCHES 32.0 |
| MATERIAL MATT | OVERALL IRON ALLOY 660 |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | OVERALL ASSN STD SINGLE MATERIAL RESPONSE A-S 5737 |
| SURFACE TREATMENT SFTT | OVERALL CADMIUM AND CHROMATE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION STDC | OVERALL FED SPEC SINGLE TREATMENT RESPONSE QQ--416 TYE 2 CLASS 3 QQ--416 |
| THREAD SERIES DESIGNATOR THSD | UNJC |
Manufacturer part numbers
Commercial part numbers cross-referenced to this NSN in the federal catalog — the parts that have been accepted as satisfying this stock number, and who makes them.
| Part number | CAGE | Manufacturer |
|---|---|---|
| BACB30LK2-4 | 06710 | VALLEY-TODECO, INC. DBA ARCONIC FASTENING SYSTEMS |
| BACB30LK2-4 | 06725 | SPS TECHNOLOGIES, LLC DBA AIR INDUSTRIES COMPANY DIV AIR INDUSTRIES COMPANY |
| BACB30LK2-4 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC |
| BACB30LK2-4 | 17446 | HUCK INTERNATIONAL, INC |
| BACB30LK2-4 | 17943 | FEDERAL MANUFACTURING CORP |
| BACB30LK2-4 | 1RC86 | HOWMET GLOBAL FASTENING SYSTEMS INC DIV CITY OF INDUSTRY OPERATIONS |
| BACB30LK2-4 | 27624 | SPS TECHNOLOGIES LLC DBA PB FASTENERS DIV PB FASTENERS |
| BACB30LK2-4 | 56878 | SPS TECHNOLOGIES, LLC DBA PB FASTENERS |
| BACB30LK2-4 | 80539 | SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP DIV AEROSPACE - SANTA ANA |
| BACB30LK2-4 | 81205 | THE BOEING COMPANY DIV DEFENSE |
| BACB30LK2-4 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC DIV TORRANCE OPERATIONS |
| BACB30LK2-4 | 97928 | HUCK INTL INC |
What it pays — so you can quote
The government's own price and demand record for this NSN — what past awards cleared at, so you know where to land your quote.
Latest unit price
$19.36
Purchases
2
Total spend
$9,097
Nov 3, 2026
Last purchased
4 · 4.0/yr
Purchase records
$18,194
Total demand
$19.36
Latest unit price
Purchase history
| Awarded | Qty | Unit price | Total | Supplier | Agency | Source |
|---|---|---|---|---|---|---|
| Nov 3, 2026 | 414 | $19.36 | $8,015 | DON INDUSTRIAL GROUP LLC (745V4) | Unknown | Source ↗ |
| Oct 14, 2026 | 281 | $3.85 | $1,082 | APOLLO AEROSPACE COMPONENTS LLC (00360) | Unknown | Source ↗ |
Related contract actions
Contract action totals, not unit prices — obligation amounts from USAspending for related awards, shown for context only. These do not appear on the price chart above.
| Action date | Award # | Recipient | Agency | Obligation |
|---|---|---|---|---|
| Oct 14, 2026 | SPE4A627P2050 ↗ | APOLLO AEROSPACE COMPONENTS LLC | — | $1,082 |
| Nov 3, 2026 | SPE4A627P4530 ↗ | DON INDUSTRIAL GROUP LLC | — | $8,015 |
Demand history
Every solicitation we've indexed for this NSN, open and closed — 2 on record. Closed RFQs (expired, cancelled, or awarded) stay here as a record of past demand; they never get removed.
Time from solicitation to award
How long does a buy take from posting to award? One bar per past award that matches a solicitation.
- Open for quotes
- Closed, awaiting award
The typical buy took 69 days from posting to award. Most of that came after quotes closed.
Who wins this item
Does one supplier win this every time, and are the winners on the listed-source list? One dot per award.
- Award in the last 2 years
- Older award
DON INDUSTRIAL GROUP LLC
last award Nov 2026
APOLLO AEROSPACE COMPONENTS LLC
last award Oct 2026
FEDERAL MANUFACTURING CORP
no award yet
no awards on record
Listed source HOWMET GLOBAL FASTENING SYSTEMS INC
no award yet
no awards on record
Listed source HOWMET GLOBAL FASTENING SYSTEMS INC DIV CITY OF INDUSTRY OPERATIONS
no award yet
no awards on record
Listed source HOWMET GLOBAL FASTENING SYSTEMS INC DIV TORRANCE OPERATIONS
no award yet
no awards on record
Listed source HUCK INTERNATIONAL, INC
no award yet
no awards on record
Listed source HUCK INTL INC
no award yet
no awards on record
Listed source DON INDUSTRIAL GROUP LLC won 1 of the last 2 awards. DON INDUSTRIAL GROUP LLC and 1 other won without being listed sources.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE4A6-26-T-20VK | Aug 20, 2026 | Aug 27, 2026 | 414 | Expired | View at DIBBS → |
| SPE4A6-26-T-15SB | Aug 12, 2026 | Aug 19, 2026 | 281 | Expired | View at DIBBS → |
Open RFQs on DIBBS → DIBBS award history ↗
About this data
- Unit prices: DLA DIBBS award records — every row links to its government record.
- AMSC: latest observed value from DIBBS solicitation history as of Oct 10, 2026.
- Contract action totals: USAspending, context only.
- Data last refreshed: 2026-11-04.
- Full methodology →
Cite this page
Citation
NSN Explorer. "SCREW,CLOSE TOLERANCE." nsnexplorer.com, https://nsnexplorer.com/nsn/5305-01-170-4571/. Data as of November 7, 2026.
Link
https://nsnexplorer.com/nsn/5305-01-170-4571/